No moat. Still in business.

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Scans code for quality issues, security flaws and AI coding policy breaks across a team's repositories, with automated review.

Since 2012

Free trial · Developer tools · Developers

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Daily notes app that puts project notes, tasks, Apple Calendar events and Reminders side by side for planning each day.

Since 2020

Subscription · Notes and knowledge · Individuals and families

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Markdown app for Mac and iOS to write, keep notes and publish them as a static blog.

One-off payment · Website builders · Individuals and families

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Paste code to get a score and a list of security and quality problems, with the option to hire a human reviewer.

Since 2026

Free plan · Security and passwords · Freelancers

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A 30 minute hiring test where engineering candidates review a realistic pull request and an AI agent answers their comments.

Since 2026

Hiring and recruiting · Software companies

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Markdown document editor where teams and AI agents like Claude and ChatGPT write together live, with presentations and blog publishing.

Since 2026

Free plan · Documents and e-signature · Developers

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Local Kanban board for handing tasks to coding agents like Claude Code and Codex, then reviewing plans and diffs before merging.

Since 2026

Free plan · Projects and tasks · Developers

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A plain, ad-free blog host for writers who want markdown posts, RSS and email subscribers on their own domain.

Free plan · Newsletters · Individuals and families

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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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Deploys each labelled GitHub pull request as a live preview environment on your own Lightsail or Hetzner servers.

Since 2020

Developer tools · Developers

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Paste or upload HTML and get clean Markdown back, in the browser or through an API.

Since 2024

Developer tools · Creators and writers

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A coding environment for developers to run several AI agents at once and review the code changes they make.

Since 2023

Subscription · Developer tools · Developers

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Mac editor where you write what to build, agents comment and explore options, then build the chosen one as a pull request.

Since 2024

Developer tools · Developers

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Keeps pull request discussions in sync across GitHub, Slack and VS Code so dev teams and AI agents review code faster.

Free plan · Developer tools · Developers

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A simple self-hosted wiki that stores markdown pages in git, with file attachments and full page history.

Free · Notes and knowledge

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A Mac app for comparing text, images and folders and resolving Git merge conflicts, for developers and designers.

Subscription · Developer tools · Developers

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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

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An API that crawls whole websites and returns tidy markdown for teams feeding RAG systems or training models.

Since 2024

Free plan · Developer tools · Developers

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An editing dashboard for Markdown and MDX kept in your GitHub repo, so clients can update static sites without Git.

Since 2022

Free plan · Website builders · Agencies

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A Mac app for comparing Git commits and branches, tracing file history and resolving merge conflicts.

Since 2023

One-off payment · Developer tools · Developers

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A Markdown notes app for developers with encrypted sync, plugins and an API that coding agents can use.

Subscription · Notes and knowledge · Developers

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Simple blog hosting with no ads or tracking: write in markdown and drag files in to publish, for a small monthly fee.

Since 2024

Subscription · Website builders · Individuals and families

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Small text app for jotting and keeping short notes, synced via iCloud to iPhone, iPad, Watch and Mac.

Notes and knowledge · Individuals and families

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A coding agent app that works out a spec with you first, then writes, checks and hands back code for approval.

Developer tools · Developers

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A keyboard-driven Mac and Linux app for reviewing GitHub pull requests, with diffs, checks and threads loaded from a local cache.

Developer tools · Developers

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A Mac notes app that keeps notes as plain Markdown text files in folders you choose, with links between notes.

Free · Notes and knowledge · Individuals and families

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Write product documentation and user manuals in Markdown and publish them as a website, PDF or eBook.

Free plan · Website builders · Software companies

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Writes pull request descriptions and team change summaries from your code diffs in GitHub and GitLab.

Free plan · Developer tools · Developers

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Self-hosted platform for managing Git, Subversion and Mercurial repos with shared code review and permissions.

Free · Developer tools · Developers

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A code review tool that explains changes made by coding agents as a story, with threaded questions for developer teams.

Since 2026

Developer tools · Developers

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A Mac app for writing and linking plain Markdown notes in your own folders, with boards, tables and optional AI help.

Since 2026

Free plan · Notes and knowledge · Individuals and families

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A self-hosted place to jot quick markdown notes in a personal timeline, keeping each private or shared.

Notes and knowledge · Individuals and families

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Builds your app on every pull request, tests the affected user journeys and posts videos of any bugs it finds.

Since 2025

Developer tools · Developers

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Edit HTML and Markdown files stored in Google Drive and put them on a public web address in one step.

Since 2026

Free plan · Website builders

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Serves Apple developer documentation as Markdown so coding assistants can read it, by URL swap or over MCP.

Free · Developer tools · Developers

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A Windows app that runs several AI coding agents as planner, coders, tester and reviewer on a shared board you control.

Since 2026

Free · Developer tools · Developers

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Records what each CI run did, such as processes and network calls, and posts a summary to the pull request.

Since 2025

Security and passwords · Developers

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Fixes the mixed content and insecure content warnings a WordPress site shows after it moves to HTTPS.

Website builders

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Desktop app that runs several AI coding agents in separate git worktrees and tells you when each needs input.

Since 2026

Free plan · Developer tools · Developers

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A federated code host with stacked pull request review and CI. You can use the hosted service or run it yourself.

Since 2025

Developer tools · Developers

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Builds a command line tool for your API from its docs, with binaries, install scripts and updates, so AI agents can use it.

Since 2026

Developer tools · Developers

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Independent hosted git service with merge requests, CI runners, a container registry and AI code review for dev teams.

Since 2026

Free plan · Developer tools · Developers

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Records program execution so developers can replay and step back through bugs in the IDE, CI and code review.

Since 2025

Free plan · Developer tools · Developers

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Run code review interviews for engineering candidates using ready templates and shared scoring rubrics.

Since 2026

Hiring and recruiting · Software companies

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Code review tool that splits pull requests into ordered chapters so reviewers follow changes faster.

Since 2026

Subscription · Developer tools · Developers

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Shared IDE and cloud where engineering teams run coding agents and review their plans and diffs together.

Since 2026

Subscription · Developer tools · Developers

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Stores the reasoning from AI coding chats with each git commit and posts it to pull requests for team review.

Since 2026

Free plan · Developer tools · Developers

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Drop in papers, notes and transcripts and an AI agent files them into a cited, linked markdown wiki you keep.

Since 2026

Notes and knowledge · Individuals and families