AI · alternatives · 2026
24 alternatives to Sidenote – comment on your rendered blog, an LLM writes the Git diff
Review your rendered markdown site like a Google Doc: select a passage, comment, and an AI agent (Claude or Codex) resolves it into a clean git diff. Local-first, in-browser. - bharadwaj-pendyala/sidenote
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
My partner usually writes substack posts which I then mirror to our website’s blog section. To automate this, I made a simple tool to scrape the post and clean it so that I can drop it to our blog easily. This might be useful to others as well. Oh and ofcourse you can instruct GPT to make any final edits :D
2024 · markdowndown.vercel.app · its alternatives →
- 2
Plannotator▲97I started this in January as a hook for Claude Code's plan mode: when it finished planning, instead of approving a wall of text in the terminal, the plan opens in your browser and you could mark it up like a document. Your annotations go back into the agent session. It grew from there. There's now PR-style code review (git, jj, p4, GitHub/GitLab PRs) and annotation for markdown, URLs, and folders. Agents produce a lot of HTML now, so Plannotator renders those artifacts and lets you annotate them too. Nine harnesses are supported: Claude Code, Codex, Copilot CLI, Gemini, OpenCode, Kiro,…
Apr 2026 · github.com · its alternatives →
- 3
Markdown conversion tool for the AI era.
2025 · chromewebstore.google.com · its alternatives →
- 4
Git Blog▲156Publish sites using Markdown & GitHub from your phone
Mar 2026 · apps.apple.com · its alternatives →
- 5
Hey HN! I built a proof-of-concept for AI memory using Git instead of vector databases. The insight: Git already solved versioned document management. Why are we building complex vector stores when we could just use markdown files with Git's built-in diff/blame/history? How it works: Memories stored as markdown files in a Git repo Each conversation = one commit git diff shows how understanding evolves over time BM25 for search (no embeddings needed) LLMs generate search queries from conversation context Example: Ask "how has my project evolved?" and it uses git diff to show actual…
2025 · github.com · its alternatives →
- 6
Writing Github readme's and markdown easier
2018 · chromewebstore.google.com · its alternatives →
- 7
I built a browser extension called Gitcasso which: - Adds markdown syntax highlighting to GitHub textareas - Lists every open PR/issue tab and any drafts - (Optional, unimplemented) autosaves your comment drafts so you don’t lose work I made it because I was impressed by https://overtype.dev/ (a markdown textarea syntax highlighter) which went big on here on HN a few weeks ago, and it seemed like a perfect fit for a GitHub browser extension. Keeping up with changes on upstream GitHub would normally be a pain, but with with Playwright and Claude Code it seemed possible for…
2025 · github.com · its alternatives →
- 8
Markdown Studio▲126Markdown editor built for the AI workflow era
Dec 2025 · mdstudio.app · its alternatives →
- 9
Diffsmith▲88Comment on your AI agent's code & collaborate on changes
Jul 2026 · apps.mergeable.io · its alternatives →
- 10
GitJournal▲63Mobile first Markdown notes synchronized with Git
2022 · gitjournal.io · its alternatives →
- 11
We now write most of our code with agents. For a while, PRs piled up, causing review fatigue, and we had this sinking feeling that standards were slipping. Consistency is tough at this volume. I’m sharing the solution we found, which has become our main product. Continue (https://docs.continue.dev) runs AI checks on every PR. Each check is a source-controlled markdown file in `.continue/checks/` that shows up as a GitHub status check. They run as full agents, not just reading the diff, but able to read/write files, run bash commands, and use a browser. If it finds…
Feb 2026 · docs.continue.dev · its alternatives →
- 12
Gistr▲55Hey HN, We (a small team of engineers and a designer) have been building Gistr to solve a personal pain point: we consume a lot of content daily—articles, videos, podcasts—and often struggle to retain or revisit the most meaningful parts. Most bookmarking tools felt too passive or generic. So we made Gistr a tool that lets you save links and capture "gists" (notes, insights, highlights, AI summaries) on top of them. It supports YouTube, articles, PDFs, and more. You can keep things private or share your gists publicly, almost like AI-enhanced social bookmarks. We’re bootstrapped and still in…
May 2026 · gistr.so · its alternatives →
- 13FB
My friends and I were complaining about having to decipher incomprehensible code one day and decided to pass the code through GPT to see if it could write easily understandable comments to help us out. It turns out that GPT can but it was still a hassle to generate comments for large files. So we decided to develop a basic web application that automatically integrates with your Github repository, generate comments, create a pull request and send you an email when it is all done. There is definitely a lot more that can be done but we wanted to gain feedback on whether this is a problem that…
2023 · swiftstart.vercel.app · its alternatives →
- 14
I built a tool that converts GitBook docs into LLM-friendly markdown files. Perfect for feeding technical documentation into ChatGPT, Claude, or custom LLaMA models. GitHub: https://github.com/Amal-David/gitbook-downloader Key features: Downloads complete GitBook documentation sites Converts to clean markdown format Web interface for easy URL input Works with ChatGPT, Claude, and other LLMs Preserves document structure and internal links [Still some bugs here, need to fix it] Will publish a hosted version if there is enough interest. Ideal for: Training custom LLMs with…
2024 · github.com · its alternatives →
- 15
I absolutely love tldraw; it's a fascinating tool I use every day. And Bear Editor? Can't imagine my life without it. So, I set out to blend the best of both worlds as a toy project :3 I've also modularized the editor (https://github.com/writly/writly) as a React Component. Feel free to give it a try!
2024 · writ.ly · its alternatives →
- 16
A standalone/GitHub CLI extension to preview GitHub Flavored Markdown, even offline. - thiagokokada/gh-gfm-preview
2025 · github.com · its alternatives →
- 17GJ
Hey HN, would love some feedback on our Jupyter Notebook review tool! We help data science teams check one another's work and share knowledge that's stored in Jupyter Notebooks. Currently, we integrate with GitHub, allowing for review comment submissions, pull request approval, comments on markdown and code cells that sync with GitHub. Happy to answer any questions!
2024 · app.gitnotebooks.com · its alternatives →
- 18
Nowadays I review a lot of code locally that was written by llms. I used to review my own code using git + delta. It started to feel limiting with the amount of code written by llms. When looking at a large diff on Friday I pointed an llm at diffs.com and trees.software and told it to build an app. It only took 16 minutes, is extremely fast for large diffs, beautiful and minimal. Today I polished it up and added all the features that I need. It has file filters, search, an llm walkthrough mode, and review comments that you can paste back into your llm. I will be using Codiff a lot, and can…
May 2026 · github.com · its alternatives →
- 19GM
Mobile First Markdown Notes integrated with Git
2020 · gitjournal.io · its alternatives →
- 20
I built simple Git-based CMS for Hugo static site generators. No backend, no database, no configs. Just login with Github, select your repo and start editing. If you use Hugo for blogging, feel free to check it out at https://github.com/arashthr/hugo-flow > Why did you make it? I wanted to be able to write posts on my phone, and it's not easy to do that with Markdown. Adding images is also always a headache: copy them, minimize and compress them, remember the correct syntax for images, and type the path. > How did you make it? I used Google Stitch for the design and…
May 2026 · github.com · its alternatives →
- 21
Logdown, the missing blogging platform for Hackers
2014 · neutrondrive.logdown.com · its alternatives →
- 22
Uses agent and Git Hooks to automatically create Git Notes on commit, containing the agent conversation that led to that commit. Works if either you or the agent commit. It's basically the same thing as entire.io just announced that they got $60m investment for. Except I got Claude Code to write it last week, in my spare time, without really paying attention. I certainly didn't read or write any of the code, except for one rubbish joke in the README. I've got a Claude Code instance working on Gemini CLI support and OpenCode support currently.
Feb 2026 · github.com · its alternatives →
- 23WI
I really love Git Ingest, but I needed something more general. So I built this! It crawls websites and converts each page to Markdown. It’s great for developer documentation. And it’s free. I built it over the excellent Jina Reader. I hope you get some use out of it!
2025 · webingest.com · its alternatives →
- 24
I got tired of copy-pasting arXiv PDFs / HTML into LLMs and fighting references, TOCs, and token bloat. So I basically made gitingest.com but for arxiv papers. You can just append "2md" to any arxiv URL (with HTML support), and you'll be given a clean markdown version, and the ability to trim what you wish very easily (ie cut out references, or appendix, etc.)
Jan 2026 · arxiv2md.org · its alternatives →
Also compare
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →