Pricing
Free forever at $0, funded by advertising rather than subscriptions or credits. No card is required. Companies can pay to advertise to users inside the product.
Learn moreFreebuff
A free, ad-funded coding agent for desktop, terminal, web and mobile
Intermediate
What is Freebuff?
Freebuff is a free, ad-funded coding agent that runs on desktop, in the terminal, in a browser and on mobile. It edits code, runs tests, opens pull requests and connects to services like GitHub and Stripe, with cloud-synced threads.
Freebuff is a coding agent that costs nothing to use. Instead of charging a subscription or metering credits, it is paid for by advertising shown inside the product, so there is no card to enter and no usage balance to watch. The homepage promises access to strong coding models on that basis, and the demo interface shows a model picker with Claude Haiku 5.5 selected. In practice the agent works through tasks the way a developer would. The sample sessions on the homepage show it chasing a flaky authentication test: it runs the test suite repeatedly, reads the helper file, edits it, reruns the suite and then explains the cause in plain language. Another example adds a sliding-window rate limiter to a Stripe webhook and follows up with a test for the 429 path. A third adds a dark mode toggle across several files and opens a pull request for review. Messages accept slash commands and references to threads or files, which keeps context handling inside the chat box. Conversations are stored in the cloud, so a thread started on the desktop app can be checked from a phone and finished in the browser. Freebuff ships for macOS (Apple Silicon and Intel), Windows (64-bit, Arm64 and an older-PC build) and Linux (x86_64 and Arm64 AppImages). A terminal version installs with npm and starts with a single command in a project folder, and the web app runs directly in a browser. Android is available now, with iOS listed as coming. The agent can also connect to outside services. The homepage names GitHub, Linear, Notion, Stripe, Vercel, Supabase, Sentry, PostHog and Resend, and describes thousands of integrations that the agent can use while it works. Freebuff sits between paid agent subscriptions and bring-your-own-key tools. Its appeal is zero cost and wide platform reach, while the trade-off is an ad-supported model and a model lineup that is shown only in small part. Hobbyists, students and developers who want to test agent workflows without commitment are the obvious audience.
How do you use Freebuff?
1Pick your platform
Choose the desktop download that matches your machine, such as Mac Apple Silicon, Windows 64-bit or Linux AppImage. Alternatively, use the browser or terminal version.
2Open the web app
To skip installing anything, open Freebuff in the browser and start a conversation right away.
3Install the terminal version
Run npm install -g freebuff in any shell, then launch freebuff from inside your project directory.4Connect your tools
Open the integrations panel and link services such as GitHub, Linear or Vercel so the agent can use them during a task.5Give the agent a task
Describe a change, like fixing a flaky test or adding a feature, and use / for commands or @ for files and threads.6Review and continue elsewhere
Check the changes the agent made, then pick the thread up later from your phone or browser since threads sync in the cloud.
Pros and cons
Pros
- Costs nothing to use, with no card required and no credits to monitorAI
- Available as desktop apps, an npm terminal tool, a web app and an Android appAI
- Cloud-synced threads let work move between desktop, phone and browserAI
- Connects to services such as GitHub, Linear, Notion, Stripe and VercelAI
- Desktop builds cover Apple Silicon, Intel Macs, Windows Arm64 and Linux Arm64AI
Cons
- Funded by ads, so advertising appears inside the working interfaceAI
- iOS is only listed as coming soon, so iPhone users cannot use the mobile app yetAI
- The homepage shows only one model in its demos, so the full model lineup is unclearAI
- No usage limits or rate caps are described, so heavy-use behavior is unknownAI
- Linux desktop builds are AppImages only, with no other package formats listedAI
How much does Freebuff cost?
Integrations
Describes thousands of one-click integrations. Named examples include GitHub, Linear, Notion, Stripe, Vercel, Supabase, Sentry, PostHog and Resend, which the agent can use while working.
Features
Coding agent that edits files, runs tests and opens pull requests; cloud-synced threads across desktop, mobile and web; slash commands and @ references to files and threads; model picker; one-click service integrations; terminal CLI installed through npm.
Frequently asked questions about Freebuff
How much does Freebuff cost?
Free forever at $0, funded by advertising rather than subscriptions or credits. No card is required. Companies can pay to advertise to users inside the product.How do you use Freebuff?
The walkthrough on this page covers 6 steps: 1. Pick your platform 2. Open the web app 3. Install the terminal version 4. Connect your tools 5. Give the agent a task 6. Review and continue elsewhere.What platforms does Freebuff support?
Freebuff is available on Web App, Android, MacOS, Windows and Linux.What does Freebuff integrate with?
Describes thousands of one-click integrations. Named examples include GitHub, Linear, Notion, Stripe, Vercel, Supabase, Sentry, PostHog and Resend, which the agent can use while working.What are the limitations of Freebuff?
Funded by ads, so advertising appears inside the working interface. iOS is only listed as coming soon, so iPhone users cannot use the mobile app yet. The homepage shows only one model in its demos, so the full model lineup is unclear.
Status
StatusActive
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Outbound clicks0
Added10/18/2026
Platforms
Web AppAndroidMacOSWindowsLinux
Pricing
Free
