No moat. Still in business.

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Developers can mock or proxy HTTP endpoints at shareable public URLs to test against APIs that are not finished yet.

Free · Developer tools · Developers

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Runs performance benchmarks in your CI and flags slowdowns on each pull request, for software teams.

Since 2023

Free plan · Developer tools · Developers

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A snippet library for developers and teams to save, label and share code, with plugins for editors, browsers and Slack.

Developer tools · Developers

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Self-hosted on-call paging that pulls commits, logs and metrics when an alert fires and explains the likely cause.

Free · Uptime and monitoring · Developers

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An AI on-call helper that looks through logs, metrics and code to find why production broke and suggest fixes.

Since 2026

Free plan · Uptime and monitoring · Developers

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Open-source shared editor and headless CMS for writing technical docs, dev blogs and knowledge bases, with Git sync.

Notes and knowledge · Developers

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Generates commit text, pull request summaries, release notes and audit docs from code diffs so engineers spend less time writing.

Free trial · Developer tools · Developers

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A light open-source code editor with coding agents, terminals and Git built in, for Mac, Windows and Linux.

Free · Developer tools · Developers

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An AI agent that looks into production alerts, finds the likely root cause and prepares fixes for engineering teams.

Free plan · Uptime and monitoring · Developers

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A free workspace for running AI coding agents in isolated Git worktrees on your laptop or a remote server.

Free · Developer tools · Developers

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Lets coding agents and CI jobs upload screenshots and reports and post them in one updating comment on a GitHub pull request.

Since 2026

Free plan · Developer tools · Developers

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Cheaper hosted runners for GitHub Actions on private repos, billed per second, set up by changing one line of the workflow.

Since 2026

Free plan · Developer tools · Developers

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A web translation editor for software teams that syncs app strings, auto-translates and hosts translation files on a CDN.

Free trial · Developer tools · Developers

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Keeps documentation in GitHub repos in step with the code and shares that context with teammates and AI coding agents.

Since 2026

Free plan · Developer tools · Developers

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A Mac app that fixes English grammar and tone as you type in any app and explains each fix in your own language.

Free plan · Something else · Individuals and families

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Runs a team of coding agents like Claude Code and Codex in separate cloud sandboxes that you can manage together

Since 2025

Developer tools · Developers

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Mac app for developers to run, watch and coordinate several AI coding agents side by side with a task board.

Free · Developer tools · Developers

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Uses AI to rate each merged pull request by the engineering effort involved, so teams can track output over time.

Since 2026

Free · Developer tools · Developers

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One OpenAI-compatible API key to call 120 AI models, with a per-request cost receipt, for developers.

Free plan · Developer tools · Developers

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A hosted setup of coding agents that picks up issues, Slack threads and alerts and returns tested pull requests.

Developer tools · Software companies

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Lightweight code editor written in assembly, with a terminal, Git and views of your Claude Code or Codex sessions.

Free · Developer tools · Developers

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Runs several AI reviewers on each GitHub pull request, drops noisy findings and posts a single review.

Free plan · Developer tools · Developers

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Widget for your web app that lets users send annotated screenshots plus console and network logs as bug reports.

Free plan · Developer tools · Developers

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Platform for AI teams to trace, simulate and evaluate their LLM agents and keep track of model spend.

Uptime and monitoring · Developers

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Local open source check that tests pull requests written by AI agents and flags removed tests, relaxed CI and faked results.

Free plan · Developer tools · Developers

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A VS Code based editor that runs several coding agents at once, each in its own Git worktree, so you can review their work.

Developer tools · Developers

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Preview and debug ZPL thermal printer labels in the browser, make barcodes and render labels through an API.

Free plan · Inventory and stock · Shops and retail

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Protects WordPress logins with two-factor checks, passkeys and attempt limits, and adds social and magic link sign-in.

Free · Security and passwords

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AI agents map your codebase, turn product specs into tickets and build them test-first, with a human approving each step.

Developer tools · Developers

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Gives you one fixed webhook URL that forwards Stripe and Paddle events to whichever branch deployment you are testing.

Free plan · Developer tools · Developers

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A Mac and web app for triaging and planning GitHub Issues and Projects from the keyboard, which AI agents can use as well.

Free plan · Projects and tasks · Developers

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Runs fast-booting microVM sandboxes, throwaway Postgres databases and app deploys for teams building AI agents.

Free plan · Developer tools · Developers

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Feature flags for gradual rollouts that open a pull request to remove each flag from your code once it is done.

Free plan · Developer tools · Developers

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A desktop app that lets artists version, lock and review large 3D and game engine files on Git without command lines.

Design and images · Creators and writers

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Gives developers a unique URL to capture and inspect incoming webhook requests live in the browser.

Free plan · Developer tools · Developers

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Turns a feature idea into a reviewed, approved build plan, then has an agent code it and open pull requests for sign-off.

Free plan · Developer tools · Developers

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Runs Claude Code and Codex jobs in parallel inside isolated containers, locally or on cloud runners, with memory shared across them.

Since 2018

Free plan · Developer tools · Developers

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Compares screenshots from your test runs so software teams can spot visual changes and approve them before merging.

Free plan · Developer tools · Developers

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Opens pull requests that upgrade dependencies, patch known vulnerabilities, fix broken CI and add tests across your repos.

Free plan · Developer tools · Developers

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Self-hosted platform that deploys Docker apps from Git with domains, SSL and databases for small dev teams.

Since 2026

Free · Developer tools · Developers

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An iPhone app with a coding agent that builds websites, scripts and Swift apps using free ad-funded AI models.

Since 2026

Free · Developer tools · Individuals and families

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A free Mac app that runs coding agents like Claude Code on your repo and lets you review each diff before committing.

Free · Developer tools · Developers

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A desktop workspace where an AI agent helps hardware makers read datasheets, lay out KiCad boards and write firmware.

Free plan · Developer tools · Developers

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A Mac notes app that keeps text, markdown and CSV files in a local folder and syncs them through git.

One-off payment · Notes and knowledge · Individuals and families

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A desktop app for running coding agents in parallel Git worktrees, scheduling their work and reviewing the diffs.

Free · Developer tools · Developers

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iPhone Markdown editor for writers that saves and versions their files in GitHub repositories.

Free · Notes and knowledge · Creators and writers

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Pulls your photos, messages, locations and social posts into one private timeline stored on your own computer.

Since 2025

Free · Notes and knowledge · Individuals and families

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Runs coding agents in managed cloud machines for code review, bug fixes and background tasks, set up in YAML.

Since 2024

Developer tools · Developers