No moat. Still in business.

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A simple to-do and reminder app for phones and tablets with checklists, memos, widgets and sync between devices.

Since 2011Updated 13 days ago

Projects and tasks · Individuals and families

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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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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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Watches web pages for changes and sends alerts or scraped data to Slack, Discord, Telegram or Google Sheets without code.

Since 2019

Free plan · Uptime and monitoring

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A secure portal that requests files from clients, sends automatic reminders and syncs what comes back to your drive.

Since 2019

Free trial · Documents and e-signature

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A private personal CRM that records details, dates and past chats about the people in your life.

Since 2017

CRM and sales · Individuals and families

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Small businesses take online bookings and payments for appointments and classes, with text and email reminders.

Free plan · Scheduling and booking · Gyms and fitness

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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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Hosted RabbitMQ and LavinMQ message queues that are monitored and maintained for you on the major clouds.

Developer tools · Developers

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WordPress plugin that sends site email through a proper SMTP provider and logs each message so you can see if it arrived.

Free · Transactional email

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Phone app that tracks your habits on grids and pays you coins to spend on rewards you pick yourself.

Since 2024

Free · Health and habits · Individuals and families

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Send JSON events from your app with one request, then chart, query with SQL, set alerts and embed dashboards.

Since 2022

Free plan · Website analytics · 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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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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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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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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Watches your sites, certificates, DNS records and scheduled tasks around the clock and tells your team as soon as something fails.

Since 2024Updated 4 months ago

Subscription · Uptime and monitoring · Developers

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Tracks domain renewals, SSL certificates and DNS records for many sites and alerts you before something lapses or breaks.

Since 2024

Subscription · Uptime and monitoring · Agencies

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Booking widget for websites and Shopify stores that handles appointments, reminders, staff availability and payments.

Subscription · Scheduling and booking · Health and clinics

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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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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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Sends messages from your scripts, servers or webhooks straight to the Pocket Alert app on your iPhone or Android phone.

Since 2024

Free plan · Uptime and monitoring · Developers

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Tracks machine learning experiments, metrics and model versions for ML teams, with an API compatible with Weights and Biases.

Free trial · Developer tools · Developers

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Message yourself notes, tasks and reminders in a chat-style app that works offline with optional encrypted sync.

Since 2024

Free · Notes and knowledge · 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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Checks your websites, SSL, ports and cron jobs, confirms outages from other regions and runs status pages on your domain.

Since 2024

Free plan · Uptime and monitoring · Online sellers

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An iPhone assistant for parents that remembers family details, plans schedules and sends reminders through chat.

Family and parenting · Individuals and families

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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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To-do list app for iPhone, iPad, Mac and web with reminders, smart lists, recurring tasks and shared lists.

Free plan · Projects and tasks · Individuals and families

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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 booking link for barbers, braiders and nail techs that takes deposits and sends reminders, with no commission.

Free plan · Scheduling and booking · Salons and beauty

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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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Task manager for Mac, iPhone and Android with natural language entry, tags, lists and syncing with common services.

One-off payment · Projects and tasks · 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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Watches AI agents in production, groups recurring failures and alerts you so a coding agent can fix them.

Free plan · Uptime and monitoring · Developers

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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 notes app for Mac and iPhone that puts notes on a timeline and links them to calendar events.

Free plan · Notes and knowledge

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A habit app based on the Atomic Habits book that helps you start small, track progress and adjust habits.

Free plan · Health and habits · 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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Fixes the mixed content and insecure content warnings a WordPress site shows after it moves to HTTPS.

Website builders

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Records each step of an AI agent's run so developers can spot slow calls, errors and token costs.

Since 2026

Free plan · Uptime and monitoring · Developers

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Turns notes, PDFs or images into flashcards you can study online, share by link or print.

Since 2025

Free · Courses and learning · Individuals and families

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Falco based Kubernetes security tool that spots attacks inside your own cluster, sends no telemetry and is paid for once.

Since 2026

One-off payment · Security and passwords · Developers

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A Mac reminders app that shows an animated cat or dog on your desktop when something is due.

Free plan · Focus and productivity · Individuals and families

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An iPhone app that records oil changes, repairs and costs per vehicle and reminds you before service.

Home and car · Individuals and families

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Lets developers record counters and revenue figures in their own database, then chart them and set alerts in a hosted dashboard.

Since 2026

Subscription · Developer tools · Developers

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An offline iPhone todo list built around a daily plan, with do dates, recurrences, reminders and subtasks.

Since 2025

Focus and productivity · Individuals and families

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Turns PDFs and notes into flashcards you can review and edit, then export to Anki, Mochi or SuperMemo.

Since 2026

Subscription · Courses and learning · Individuals and families