No moat. Still in business.

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Issue tracking and project planning for software teams, with boards, sprints, roadmaps and AI agent handoffs.

Since 2016

Free plan · Projects and tasks · 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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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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Desktop data analysis app where you ask about your data in plain English and get Python code, charts and notebooks run on your computer.

Since 2017

Data and spreadsheets

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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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Track and compare spending across projects by dragging budget items around Kanban boards that total themselves.

Since 2024

Subscription · Money and budgeting

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A sales pipeline and lead tracker that reads and writes a Google Sheet, made for solo founders and tiny teams.

Since 2026

Free · CRM and sales · Freelancers

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Free to-do app with timers, a Pomodoro mode and day planning that keeps your data on your own device.

Free · Time tracking · Individuals and families

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Pools GPUs and CPUs from many cloud providers and your own servers so developers can run large data jobs in one place.

Since 2026

Developer tools · 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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Gets and renews free Let's Encrypt SSL certificates on cPanel shared hosting without command line work.

Free plan · Security and passwords

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Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.

Uptime and monitoring · Developers

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Web app for teams to plan work into milestones, track tasks on a kanban board and log time against them.

Since 2014

Projects and tasks

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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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Flexible board based work management tool where teams build their own views, fields and automations for projects.

Projects and tasks

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Open-source task and project manager with list, Kanban, Gantt and table views that you can self-host or run in its EU cloud.

Projects and tasks

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A task manager that lays out your whole week on a timeline, works offline, and can be self-hosted.

Free · Projects and tasks · Individuals and families

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An open-source kanban board you install yourself for tracking tasks across boards, lists and cards.

Free · Projects and tasks

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Plans sprints for software teams with task boards, a roadmap, a backlog, retros, whiteboards and progress charts in one tool.

Free plan · Projects and tasks · Software companies

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A shared workspace where people and small teams write linked notes and docs, keep tasks, and ask an AI assistant.

Since 2024

Free plan · Projects and tasks

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Shared space where teams write docs and move the same pages across boards to track project status.

Free plan · Projects and tasks

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Project tool with task lists, kanban boards, subtasks and Gantt charts that teams can use for free.

Free plan · Projects and tasks

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Project board that shows every project as a column, with notes, Gantt charts and AI agent helpers for teams.

Since 2024

Free plan · Projects and tasks

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Kanban boards, sprints, backlogs and roadmaps for software teams that work in an agile way.

Free plan · Projects and tasks · 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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Project management for teams, with task boards, timelines, timesheets and workload views at a flat price per user.

Subscription · Projects and tasks

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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 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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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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Visual project boards where teams assign and track tasks, keep shared documents and report on progress, hosted in Germany.

Free plan · Projects and tasks

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Realtime kanban boards for planning projects and splitting work into tasks, available hosted or to run yourself.

Subscription · Projects and tasks

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Kanban boards for people and teams, with Pomodoro or stopwatch time logging and flow charts for spotting bottlenecks.

Free plan · Projects and tasks

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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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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 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 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 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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Self-hosted notes and checklists app that keeps everything as Markdown files on your server, with kanban boards.

Free · Notes and knowledge · Individuals and families

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A native Markdown notes app for Mac, iPhone and Windows that stores notes in your own cloud, with Kanban boards.

Notes and knowledge · Individuals and families

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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 kanban board that shows what each AI coding agent is doing and alerts you when one needs your input.

Since 2026

Free plan · Projects and tasks · Developers

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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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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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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