No moat. Still in business.

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Excel add-in for querying tables with SQL, scripting workbooks in C# and building custom Excel functions.

Since 2016

Free plan · Data and spreadsheets · Developers

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An iPhone app that takes Japanese learners from beginner to fluent with one new sentence per flashcard and spaced review.

Since 2015

Courses and learning · Individuals and families

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Gives a public web address to a server running on your own machine over SSH, for developers testing webhooks and demos.

Since 2017

Free plan · Developer tools · Developers

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Mac screenshot and screen recording tool with a cloud space where teams and clients store, comment on and share captures.

Design and images · Agencies

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An API that renders HTML and saved templates into PDFs and screenshots, for developers who need documents from their apps.

Pay as you go · Documents and e-signature · Developers

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Helps students sort courses, tasks, class schedules, flashcards and files into colour-coded folders.

Free · Focus and productivity · Individuals and families

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Tracks staff work hours and computer activity with timesheets, screenshots and reports for remote and office teams.

Free trial · Time tracking · Agencies

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Mac app for screen captures and recordings that automatically adds zoom on clicks, captions and your webcam to videos.

Free · Video and audio · Creators and writers

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Drag files onto this Mac menu bar app to store them in a Cloudflare R2 bucket you own and copy a share page link, with no subscription.

Since 2026

Free · Something else · Individuals and families

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A note app for desktop and phone that records and transcribes, then answers questions using your own notes.

Since 2026

Notes and knowledge · Individuals and families

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A feedback widget that grabs screenshots, DOM and console logs from users so your coding agent can fix the issue.

Since 2026

Free plan · Customer support · 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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Make your own flashcard decks and review them on a spaced repetition schedule in the browser.

Since 2015

Free plan · Courses and learning · Individuals and families

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A browser extension that saves and highlights words you look up on web pages, then drills them with flashcards.

Since 2020

Free plan · Courses and learning · Individuals and families

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Note app for students that builds flashcards, quizzes and summaries from notes and PDFs with spaced repetition.

Since 2021

Free plan · Courses and learning · Individuals and families

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A throwaway URL and inbox where developers view HTTP requests and emails as they arrive and respond with scripts or a visual editor.

Free plan · Developer tools · Developers

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Flashcard app that uses spaced repetition so learners review hard cards more often, with sync between devices.

Courses and learning · Individuals and families

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Free open-source Mac app for screenshots and screen recordings, with markup, OCR and a GIF editor.

Free · Design and images · Individuals and families

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Creates public links to sites running on your own machine so you can test webhooks, check on phones or share work.

Developer tools · Developers

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Gives local dev servers a stable public URL for testing webhooks and OAuth or sharing previews, with flat seat pricing.

Since 2023

Free plan · Developer tools · Developers

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Flashcard app for iPad and iPhone where students draw, type or add images to cards and review them with spaced repetition.

Since 2024

Courses and learning · Individuals and families

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A small Mac app for taking, marking up and measuring screenshots, with text recognition, built for designers and developers.

Free plan · Design and images · Individuals and families

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A study app for students with spaced repetition flashcards, made from notes and PDFs, and scheduled around your calendar.

Free plan · Courses and learning · Individuals and families

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Screenshot tool for desktop users that lets you capture an area, mark it up with arrows, blur or text, and save it.

Free · Design and images

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Turn screenshots into framed, styled images and mockups for social posts, app stores and marketing.

Since 2022

Free plan · Design and images · Agencies

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Hosted service that receives, logs and retries webhooks, with a CLI for local testing and a typed SDK.

Since 2024

Developer tools · Developers

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Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.

Since 2023

Data and spreadsheets

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A cloud workspace for creating, running and sharing marimo Python and SQL notebooks for data work

Since 2024

Developer tools · Developers

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Mac app that captures stills and video of your Mac, iPhone or iPad screen, then lets you mark up and add backgrounds before sharing.

One-off payment · Design and images · Creators and writers

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Students turn class notes or a PDF into a practice test that marks itself and explains each question they got wrong.

Since 2024

Free plan · Courses and learning · Individuals and families

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Flashcard maker that schedules reviews by spaced repetition, with dictionaries and text to speech for language learners.

Since 2024

Free plan · Courses and learning · Individuals and families

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Mac screenshot tool that adds backgrounds, hides private details and pulls out text, for people sharing screenshots online.

Since 2024

Free · Design and images · Creators and writers

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Learn to read Arabic with alphabet lessons, graded stories and flashcards that schedule reviews around your memory.

Since 2026

Free plan · Courses and learning · Individuals and families

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A browser extension that takes full-page or region screenshots, lets you annotate them, and saves image or PDF locally.

Since 2026

Free · Design and images

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A self-hosted image hosting app where teams upload and share pictures with passwords, expiry dates and an API.

Free · Design and images · Creators and writers

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A language app that translates words offline, saves them to your own tagged word list and helps you review them with flashcards.

Since 2025

Courses and learning · Individuals and families

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A Mac app that captures full resolution screenshots from a connected iPhone or Android phone with one shortcut, saved locally.

Design and images · Developers

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A reading and study app that lets you clip from books and papers, link the clips in mind maps and review them as cards.

Courses and learning · Individuals and families

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Mac screenshot app for scrolling and window captures, quick markup, text recognition and pinning images on screen.

Design and images · Individuals and families

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Mac app for taking, annotating and sharing screenshots and screen recordings, with cloud links.

Design and images · Individuals and families

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A language app where a partner or friend fills in words, audio and sentences for you to study, on iPhone and Android.

Since 2025

Courses and learning · Individuals and families

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Hover over Chinese text in any Mac app to see pinyin, meanings and sentence breakdowns, and save words as flashcards.

Since 2026

Free plan · Courses and learning · Individuals and families

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Students upload slides or notes and get practice quizzes and spaced-repetition flashcards made from them.

Since 2025

Free plan · Courses and learning · Individuals and families

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A flashcard app that makes study cards from your PDFs, articles and photos and schedules reviews so you remember them.

Since 2026

Free plan · Courses and learning · Individuals and families

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Learn English words from books you are reading, with ready-made flashcards, quizzes and a word bank.

Since 2025

Free plan · Courses and learning · Individuals and families

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An app for learning Japanese with an AI tutor, speaking roleplays, kanji, quizzes and a personal study plan.

Since 2026

Free plan · Courses and learning · Individuals and families

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A free Mac app for recording screen demos with auto zoom and captions, and marking up screenshots.

Since 2026

Free · Video and audio · Creators and writers

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Learn Japanese or Korean by tapping words in YouTube videos, manga and books, with flashcards that track what you know.

Since 2025

Free plan · Courses and learning · Individuals and families