diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index e9f573397b..c6c3644ba9 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -3,6 +3,9 @@
 # Please see the documentation for all configuration options:
 # https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 
+# TODO: update for pnpm when possible:
+# https://github.com/dependabot/dependabot-core/issues/1736
+
 version: 2
 updates:
   # Root package.json
diff --git a/.github/workflows/node-js-ci.yml b/.github/workflows/node-js-ci.yml
index 1bb801f76b..8c1becc1ce 100644
--- a/.github/workflows/node-js-ci.yml
+++ b/.github/workflows/node-js-ci.yml
@@ -16,10 +16,22 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2.1.5
-      - name: Install dependencies and run prettier-check
+      - uses: pnpm/action-setup@v2.0.1
+        with:
+          version: 6.0.2
+          run_install: true
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
+        env:
+          cache-name: cache-pnpm-modules
+        with:
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
+      - name: Run prettier-check
         run: |
-          npm install
-          npm run prettier-check
+          pnpm run prettier-check
 
   # Make sure eslint passes
   eslint:
@@ -28,10 +40,22 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2.1.5
-      - name: Install dependencies and run eslint
+      - uses: pnpm/action-setup@v2.0.1
+        with:
+          version: 6.0.2
+          run_install: true
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
+        env:
+          cache-name: cache-pnpm-modules
+        with:
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
+      - name: Run eslint
         run: |
-          npm install
-          npm run eslint
+          pnpm run eslint
 
   # Run unit tests on all platforms/versions of node
   unit:
@@ -43,25 +67,25 @@ jobs:
         node-version: [12.x, 14.x]
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/cache@v2.1.5
+      - uses: actions/setup-node@v2.1.5
+      - uses: pnpm/action-setup@v2.0.1
+        with:
+          version: 6.0.2
+          run_install: true
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
         env:
-          cache-name: cache-node-modules
+          cache-name: cache-pnpm-modules
         with:
-          # npm cache files are stored in `~/.npm` on Linux/macOS
-          path: ~/.npm
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
           restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
-      - uses: actions/setup-node@v2.1.5
-        with:
-          node-version: ${{ matrix.node-version }}
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
       - name: Get number of CPU cores
         uses: SimenB/github-actions-cpu-cores@v1
-      - name: Install dependencies and run tests with default env
+      - name: Run unit tests with default env
         run: |
-          npm install
+          # pnpm can't handle passing args through to run scripts: https://github.com/pnpm/pnpm/issues/2764
           npm run jest --max-workers ${{ steps.cpu-cores.outputs.count }}
 
   # Run end-to-end tests along with the microservices in docker-compose on Linux
@@ -72,19 +96,26 @@ jobs:
       matrix:
         node-version: [12.x, 14.x]
     steps:
-      - uses: actions/cache@v2.1.5
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2.1.5
+      - uses: pnpm/action-setup@v2.0.1
+        with:
+          version: 6.0.2
+          run_install: true
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
+        env:
+          cache-name: cache-pnpm-modules
         with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
           restore-keys: |
-            ${{ runner.os }}-buildx-
-      - uses: actions/checkout@v2
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
       - uses: actions/setup-node@v2.1.5
         with:
           node-version: ${{ matrix.node-version }}
       - uses: microsoft/playwright-github-action@v1
-      - name: Start microservices and run tests
+      - name: Start microservices and run e2e tests
         run: |
-          npm install
-          npm run services:start
-          npm run jest:e2e
+          pnpm run services:start
+          pnpm run jest:e2e
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 98e0312bcd..b9b061a2f9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,23 +15,48 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
+        env:
+          cache-name: cache-pnpm-modules
+        with:
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
       - uses: actions/setup-node@v2.1.5
-      - name: Install dependencies and run prettier-check
+      - uses: pnpm/action-setup@v1.2.1
+        with:
+          version: 6.0.1
+          run_install: true
+      - name: Run prettier-check
         run: |
-          npm install
-          npm run prettier-check
+          pnpm run prettier-check
 
+  # Make sure eslint passes
   # Make sure eslint passes
   eslint:
     name: ESLint Check
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
+        env:
+          cache-name: cache-pnpm-modules
+        with:
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
+          restore-keys: |
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
       - uses: actions/setup-node@v2.1.5
-      - name: Install dependencies and run eslint
+      - uses: pnpm/action-setup@v1.2.1
+        with:
+          version: 6.0.1
+          run_install: true
+      - name: Run eslint
         run: |
-          npm install
-          npm run eslint
+          pnpm run eslint
 
   # Run unit tests on all platforms/versions of node
   unit:
@@ -43,26 +68,27 @@ jobs:
         node-version: [12.x, 14.x]
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/cache@v2.1.5
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
         env:
-          cache-name: cache-node-modules
+          cache-name: cache-pnpm-modules
         with:
-          # npm cache files are stored in `~/.npm` on Linux/macOS
-          path: ~/.npm
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package.json') }}
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
           restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
       - uses: actions/setup-node@v2.1.5
         with:
           node-version: ${{ matrix.node-version }}
+      - uses: pnpm/action-setup@v1.2.1
+        with:
+          version: 6.0.1
+          run_install: true
       - name: Get number of CPU cores
         uses: SimenB/github-actions-cpu-cores@v1
-      - name: Install dependencies and run tests with default env
+      - name: Run unit tests with default env
         run: |
-          npm install
-          npm run jest --max-workers ${{ steps.cpu-cores.outputs.count }}
+          pnpm run jest --max-workers ${{ steps.cpu-cores.outputs.count }}
 
   # Run end-to-end tests along with the microservices in docker-compose on Linux
   e2e:
@@ -72,22 +98,25 @@ jobs:
       matrix:
         node-version: [12.x, 14.x]
     steps:
-      - uses: actions/cache@v2.1.5
+      - uses: actions/checkout@v2
+      - name: Cache pnpm modules
+        uses: actions/cache@v2.1.5
+        env:
+          cache-name: cache-pnpm-modules
         with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          path: ~/.pnpm-store
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-${{ hashFiles('**/package.json') }}
           restore-keys: |
-            ${{ runner.os }}-buildx-
-      - uses: actions/checkout@v2
+            ${{ runner.os }}-build-${{ env.cache-name }}-${{ matrix.node-version }}-
       - uses: actions/setup-node@v2.1.5
         with:
           node-version: ${{ matrix.node-version }}
       - uses: microsoft/playwright-github-action@v1
-      - name: Start microservices and run tests
+      - name: Start microservices and run e2e tests
         run: |
-          npm install
-          npm run services:start
-          npm run jest:e2e
+          pnpm run services:start
+          pnpm run jest:e2e
+
   release:
     needs: [prettier, eslint, unit, e2e]
     runs-on: ubuntu-latest
diff --git a/.husky/pre-commit b/.husky/pre-commit
index d0612ad370..a9e30b9bec 100755
--- a/.husky/pre-commit
+++ b/.husky/pre-commit
@@ -1,4 +1,4 @@
 #!/bin/sh
 . "$(dirname "$0")/_/husky.sh"
 
-npm run pre-commit
+pnpm run pre-commit
diff --git a/.npmrc b/.npmrc
index aaab65b7ac..43424afb6c 100644
--- a/.npmrc
+++ b/.npmrc
@@ -1,13 +1,5 @@
-# Don't create or read package-lock.json
-package-lock=false
-# Use exact versions of dependencies vs. semver minor updates
-save-exact=true
-
 # Allow running postinstall script in Docker
 unsafe-perm=true
 
 # Set empty tag version prefix
 tag-version-prefix=""
-
-#Set legacy peer dependencies to 'true', (needed for npm7.x compatibility for now)
-legacy-peer-deps=true
diff --git a/docs/environment-setup.md b/docs/environment-setup.md
index 3ac7416c78..a2de065ed1 100644
--- a/docs/environment-setup.md
+++ b/docs/environment-setup.md
@@ -2,7 +2,8 @@
 
 ### Prerequisites:
 
-- [Node.js (npm)](https://nodejs.org/en/download/)
+- [Node.js](https://nodejs.org/en/download/)
+- [pnpm](https://pnpm.io/) (we use `pnpm` vs. `npm` for package installation)
 - [Redis](https://redis.io/) (2 methods)
   - Use [Docker and docker-compose](https://docs.docker.com/install/)
   - Install as a [native application](#Install-Redis-as-a-native-application)
@@ -137,6 +138,32 @@ _NOTE: This will not work on WSL (Windows Subsystem for Linux). Use the approach
 
 ## After installing the prerequisites:
 
+### Installing Dependencies with pnpm
+
+Telescope is structured as a [monrepo](https://en.wikipedia.org/wiki/Monorepo) with more than a dozen separate projects all contained within a single git repository. Because monorepos often share many of the same dependencies, there can be a lot of duplication (and waste) when installing packages.
+
+To help reduce the number of packages that must be stored in `node_modules`, we use [pnpm](https://pnpm.io/) intead of the usual `npm` command. With [pnpm we can save a lot of disk space and installation time](https://pnpm.io/motivation).
+
+The cost of using pnpm is that there are a few differences in how [packages are installed](https://pnpm.io/cli/install), [added to package.json](https://pnpm.io/cli/add), etc. The [docs](https://pnpm.io/pnpm-cli) have full details on how it works, and after a few minutes you'll have no trouble.
+
+To install all of Telescope's dependencies, use the following command:
+
+```bash
+pnpm install
+```
+
+Similarly, to run tests:
+
+```bash
+pnpm test
+```
+
+And to run npm scripts:
+
+```bash
+pnpm run <script-name>
+```
+
 ### Start Docker
 
 ```bash
@@ -162,9 +189,9 @@ _Note: Make sure you're running these commands in the root of telescope project.
 This is the default setting, you do not need to copy or modify any `env` file.
 
 ```bash
-npm run services:start
+pnpm run services:start
 
-npm run dev
+pnpm run dev
 ```
 
 Microservices will start downloading feeds and processing them until stopped. For more information about the services, please read [Telescope API Services](../src/api/readme.md).
@@ -176,7 +203,7 @@ If this doesn't work for you, it is possible that you have an old `.env` file in
 ```bash
 cp config/env.staging .env
 
-npm run dev
+pnpm run dev
 ```
 
 This will provide you staging back-end without running it locally.
@@ -190,22 +217,22 @@ This one depends on which part you're working with. For example, if you want to
 After modify the `.env` file, run these commands,
 
 ```bash
-npm run services:start
+pnpm run services:start
 
-npm run dev
+pnpm run dev
 ```
 
 #### Want to run `auth/image/posts` service solely
 
-`npm run services:start auth` or `npm run services:start image` or `npm run services:start posts`
+`pnpm run services:start auth` or `pnpm run services:start image` or `pnpm run services:start posts`
 
 #### Want to update the Docker image(s) after making some changes
 
 Run the following commands to rebuild the image(s):
 
 ```bash
-npm run services:clean
-npm run services:start
+pnpm run services:clean
+pnpm run services:start
 ```
 
 #### Login/SSO:
diff --git a/docs/git-workflow.md b/docs/git-workflow.md
index b69b9e7135..b486a01c11 100644
--- a/docs/git-workflow.md
+++ b/docs/git-workflow.md
@@ -14,7 +14,7 @@ When working on fixing bugs, please use the following workflow:
    git checkout master
    git pull upstream master
    ```
-1. Additionally, it is a good idea to run `npm install` to make sure everything is up to date and you have everything necessary.
+1. Additionally, it is a good idea to run `pnpm install` to make sure everything is up to date and you have everything necessary.
 1. Create a branch for your work, using the issue number:
    ```
    git checkout -b issue-123
@@ -28,13 +28,13 @@ When working on fixing bugs, please use the following workflow:
 
 ## Testing Your Code
 
-Run the test suite, using `npm test`. Fix any lint errors, warnings, or other failures (NOTE: if you're not sure what an eslint rule means, [look it up in the docs](https://eslint.org/docs/rules/)):
+Run the test suite, using `pnpm test`. Fix any lint errors, warnings, or other failures (NOTE: if you're not sure what an eslint rule means, [look it up in the docs](https://eslint.org/docs/rules/)):
 
 ```
-npm test
+pnpm test
 ...if there are lint errors, try having eslint fix them for you
-npm run eslint-fix
-npm test
+pnpm run eslint-fix
+pnpm test
 ...manually fix any errors yourself, rerunning npm test each time to confirm
 ```
 
@@ -42,26 +42,16 @@ You can also run the tests in _watch_ mode, so that they will automatically ru-r
 when you make changes:
 
 ```
-npm run jest-watch
+pnpm run jest-watch
 ```
 
 In addition, you can run individual tests, in both normal or watch mode, by
 adding the name of a file. For example, to run tests in a file called parser.test.js:
 
 ```
-npm test parser
+pnpm test parser
 ```
 
-You can add feeds to the queue manually using `add-feed` followed by the name of the blogger and url of the feed. This can be useful for testing purposes.
-
-First, add a link to the binary:
-
-`npm link`
-
-Then use `add-feed`
-
-`add-feed --name "Bender Bending Rodriguez" --url futurama.wordpress.com/feed`
-
 ## Debugging
 
 The Telescope backend can be debugged using VSCode. See the [VSCode Debugging docs](https://code.visualstudio.com/docs/editor/debugging#_launch-configurations) and use the Launch Telescope configuration to start the server and debugger within VSCode.
@@ -110,7 +100,7 @@ fixup b85d7a9 Final Build
    ...edit files to fix review comments
    git add file1
    git commit -m "Updated file1 to fix review comments"
-   npm test
+   pnpm test
    ...if the tests fail, fix things, and repeat until they pass
    git push origin issue-123
    ```
@@ -124,7 +114,7 @@ fixup b85d7a9 Final Build
    git add file1
    git rebase --continue
    ...repeat until your rebase completes.  If you get stuck, use git rebase --abort to stop
-   npm install
+   pnpm install
    ...this is likely necessary to update your node_modules/, see below
    git push origin issue-123 -f
    ```
@@ -135,6 +125,5 @@ If you get stuck with any of this, ask in your issue or pull request, and we'll
 
 If you are doing any work that relates to the `package.json` file, you need to do this with care. Here are some tips:
 
-- we don't include `package-lock.json` in our tree. Instead, we use [exact](https://docs.npmjs.com/misc/config#save-exact) versions in `package.json`. When you `npm install` a package, we specify an exact version number vs. using a semver range.
-- don't hand-edit this file to add packages. Instead, use `npm install --save package-name` or `npm install --save-dev package-name` to add packages to the `dependencies` or `devDependencies` sections.
-- if you touch `package.json`, always re-run `npm install`.
+- don't hand-edit any of the `package.json` files, use [pnpm add](https://pnpm.io/cli/add) instead.
+- we store the `pnpm-lock.yaml` lock file in git. See https://pnpm.io/git#lockfiles for more details. If you add or update dependencies, you will need to also include the updated lockfile.
diff --git a/docs/reports.md b/docs/reports.md
index 92a34a6134..75e856d718 100644
--- a/docs/reports.md
+++ b/docs/reports.md
@@ -8,7 +8,7 @@ The report you can generate is test coverage information. To generate this repor
 run the following command:
 
 ```
-npm run coverage
+pnpm run coverage
 ```
 
 After the tests complete, a text summary report is printed. However, a much more
diff --git a/package.json b/package.json
index 6b059e181c..a29c7e7017 100644
--- a/package.json
+++ b/package.json
@@ -10,26 +10,15 @@
   "scripts": {
     "api:start": "docker-compose -f ./src/api/docker-compose-api.yml up --build -d",
     "api:stop": "docker-compose -f ./src/api/docker-compose-api.yml down",
-    "install:auth-service": "cd src/api/auth && npm install",
-    "install:image-service": "cd src/api/image && npm install",
-    "install:users-service": "cd src/api/users && npm install",
-    "install:posts-service": "cd src/api/posts && npm install",
-    "install:search-service": "cd src/api/search && npm install",
-    "install:feed-discovery-service": "cd src/api/feed-discovery && npm install",
-    "install:parser-service": "cd src/api/parser && npm install",
-    "install:autodeployment": "cd tools/autodeployment && npm install",
-    "install:next": "cd src/web && npm install",
-    "build": "npm run build --prefix src/web --",
-    "dev": "npm run dev --prefix src/web --",
-    "develop": "npm run dev",
+    "build": "pnpm --dir src/web build --",
+    "dev": "pnpm --dir src/web dev --",
+    "develop": "pnpm run dev",
     "eslint": "eslint --config .eslintrc.js",
     "eslint-fix": "eslint --config .eslintrc.js --fix",
-    "lint": "npm run eslint",
-    "postinstall": "run-s install:*",
+    "lint": "pnpm run eslint",
     "prettier": "prettier --write \"./**/*.{md,jsx,json,html,css,js,yml}\"",
     "prettier-check": "prettier --check \"./**/*.{md,jsx,json,html,css,js,yml}\"",
-    "pretest": "npm run lint",
-    "test": "npm run jest",
+    "test": "run-s lint jest",
     "jest": "cross-env NODE_ENV=test LOG_LEVEL=error MOCK_REDIS=1 FEED_URL_INTERVAL_MS=200 jest -c jest.config.js --",
     "jest:e2e": "jest -c jest.config.e2e.js --",
     "coverage": "cross-env NODE_ENV=test LOG_LEVEL=silent MOCK_REDIS=1 FEED_URL_INTERVAL_MS=200 jest -c jest.config.js --collectCoverage --",
@@ -45,7 +34,8 @@
     "services:stop": "node bin/services-stop.js",
     "services:logs": "node bin/services-logs.js --",
     "services:clean": "node bin/services-clean.js",
-    "prepare": "husky install"
+    "prepare": "husky install",
+    "preinstall": "npx only-allow pnpm"
   },
   "repository": "Seneca-CDOT/telescope",
   "license": "BSD-2-Clause",
@@ -133,6 +123,7 @@
     "ts-jest": "26.5.4"
   },
   "engines": {
-    "node": ">=12.0.0"
+    "node": ">=12.0.0",
+    "pnpm": ">=6"
   }
 }
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
new file mode 100644
index 0000000000..158ba66626
--- /dev/null
+++ b/pnpm-workspace.yaml
@@ -0,0 +1,6 @@
+# pnpm workspace definition: https://pnpm.io/pnpm-workspace_yaml
+packages:
+  # web front-end
+  - 'src/web'
+  # microservices
+  - 'src/api/**'
diff --git a/src/api/readme.md b/src/api/readme.md
index de95877078..ab7d96b35a 100644
--- a/src/api/readme.md
+++ b/src/api/readme.md
@@ -30,13 +30,19 @@ docker-compose --env-file config/env.development up -d
 You can access logs for one or more services:
 
 ```
-npm run services:logs image firebase
+pnpm run services:logs image firebase
 ```
 
 To stop the services:
 
 ```
-npm run services:stop
+pnpm run services:stop
+```
+
+To see logs for one of the running services (e.g., `image`):
+
+```
+pnpm run services:logs image
 ```
 
 ## API Lookup Table
diff --git a/test/test-web-content/manual-auth/index.html b/test/test-web-content/manual-auth/index.html
index 6e340a08fb..038c238856 100644
--- a/test/test-web-content/manual-auth/index.html
+++ b/test/test-web-content/manual-auth/index.html
@@ -20,7 +20,7 @@ <h1>Telescope Auth Service Test</h1>
 
     <code>
       <pre>
-        npm run services:start
+        pnpm run services:start
       </pre>
     </code>