Browser extensions and web reading
AI text rewriting tools
Tools that rewrite, proofread, translate, humanize or otherwise transform text, mostly via hotkeys or browser extensions on selected text, plus browser text utilities and typing aids, for people who write across apps.
Built for: Writers, professionals, students
Projects since May 04
370
Different builders
350
Last 4 weeks vs 8 before
-5%
AI is the core
43%
Projects per week
Mostly web app (46%), browser extension (25%), desktop app (14%) · from r/SideProject, r/chrome_extensions, r/vibecoding, r/IMadeThis
Latest
- Ownhand — Learns a user's writing style from edited drafts and supplies style rules to an AI agent for messages and emails.“Built an MCP tool called Ownhand. It learns your writing style, so your Agent can hook into it automatically when writing a message or an email. It tracks style templates for any domain (chat, formal email, etc.) and adds rules over time to better match your voice.”
- PromptTyping — Provides typing practice using AI prompts, skill definitions, and PRD-style documents as test text, with timed modes running fully in the browser.“Typing practice for devs who write prompts all day”
- hangulpace — Tests how fast the user can type Korean text in a browser typing game.“Korean fast typing challenge”
- Dabook — Converts book text into a fine-grained dataset for training language models.“I made a python package that can convert any book to a fine level Dataset for training!!”
- marathitypingonline.com — Converts English-letter phonetic input into Marathi script via transliteration for copying.“my uncle was struggling to type in marathi, like he wanted to type in english but convert it to marathi (NOT translation)”
- LoveNet — Obfuscates text by encoding it as periodic table element symbols or hiding it inside emojis.“Hey Have you ever shared mobile phone with parents or siblings ?”
- intab — Adds an inline AI writer inside text fields in the browser for rewriting, summarizing, translating, and fixing grammar.“got tired of copy/pasting into chatgpt, so i made this inline AI tool”
- Rewrites, summarizes, or drafts text inline in any web text field using the Gemini API.“I built an inline AI writing assistant Chrome extension that rewrites and generates text on any website—would love your feedback!”
- Outpace — Runs a typing game that measures typing speed, adapts difficulty to the player's skill, and posts scores to a global leaderboard.“I asked Claude Opus 5.5 to build a typing game end to end, from one prompt”
- SlashAnywhere — Expands text shortcuts and autofills form fields in any web page.“Before/after: reworked the landing page for my extension. Feedback welcome”
- Typing Speed Test — Measures typing speed over a 60-second test and jokingly judges results, including a mode with slang text.“Roast my typing test app — it already roasts slow typists, now it's your turn to roast me”
- shakesp-ai-re — Proofreads written text for grammar and spelling using cheap LLMs, across platforms.“My writing is so bad, so I need a proofread! I built this [give me feedback]”
- KeyPaw — Counts how often each key is pressed on a desktop and shows typing statistics with a heatmap, alongside an on-screen cat companion.“KeyPaw: a desktop cat that counts every key you press and give you detailed data on your use”
- OOFmode — Translates corporate jargon into plain meaning, flags manipulative language in emails, and rewrites angry drafts into professional messages.“I wrote 50,000 lines of code to survive my toxic manager. It's been live since Sept 10 with 0 users, here is my story and SaaS tool.”
- Type Clean — Rewrites selected browser text while trying to preserve the writer's personal voice.“I built Type Clean, a Chrome extension that rewrites selected text and keeps your voice”
- Codestroke — Tests typing speed on code snippets across nine programming languages in short timed sessions.“AI made me rusty at typing code, so I built a little practice site”
- Ember — Displays text one word at a time at a fixed point to speed up reading (RSVP).“Ember: RSVP e-reader”
- Text Expander & Autofill — Expands text shortcuts into saved snippets and autofills form fields in the browser.“Thanks, Claude, for the promo video 🙏”
- monkeytype-tui — Runs a fullscreen typing speed test in the terminal, inspired by Monkeytype.“I made a fullscreen terminal typing test inspired by monkeytype: monkeytype TUI”
- CoHamster — Shows inline AI autocomplete suggestions beside the cursor in Mac text fields that can be accepted word by word with Tab.“CoHamster — free, local AI autocomplete for Mac (a Cotabby fork)”
Most discussed
- SuperHumanizer — Rewrites AI-generated text so it reads as more human-written.“My SAAS just crossed 1.7M active users and over 1.2 billion tokens”
- BlinkType — Types Morse code from eye blinks captured by webcam, with short blinks as dots, long blinks as dashes, and head shakes as backspace.“I built a web app that types Morse code from eye blinks.”
- WandPen — Lets users run language models from any website through a Chrome extension to polish writing, generate ideas, and assist with drafting.“My Chrome extension has hit $100 MRR! 🥳”
- Provides a customizable writing app with toggleable side panels and format bar and a distraction-free focus mode.“How can I refine this UI?”
- Outpace — Runs a typing game that measures typing speed, adapts difficulty to the player's skill, and posts scores to a global leaderboard.“I asked Claude Opus 5.5 to build a typing game end to end, from one prompt”
- Lets users practice typing directly on any webpage through a browser extension.“Made my first Chrome extension to practice typing on any webpage”
- jgrep — Filters lines of text by semantic meaning using a natural-language description instead of a literal pattern.“jgrep: grep, but the pattern is a description. Filters lines by meaning!”
- Receipts — Records every keystroke while a student writes an essay and gives teachers a replay and verification report of the writing process.“I'm 14 and my mom will only buy me a domain if one stranger actually pays for my app.”
- Typing Practice Anywhere — Lets users practice typing on text from any webpage they are reading, instead of fixed stock paragraphs.“Made my first Chrome extension to practice typing on any webpage”
- The Text Tool — Provides a collection of over 200 browser-based text tools that run locally for editors, developers and writers.“I built a site and now I can't stop building it..”