No moat. Still in business.

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Lets teams edit, test and send transactional email templates without code deploys, with A/B tests and analytics.

Since 2014

Subscription · Transactional email · Software companies

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Email marketing app for sending newsletters, campaigns and automated sequences, built for teams that write together.

Since 2018

Free plan · Email marketing · Online sellers

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Run MATLAB-style code with automatic GPU speedups and live 3D plots, in the browser, on desktop or from the command line.

Free plan · Developer tools · Developers

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Mac app that opens a floating note on a shortcut so you can jot a thought, saved as a local markdown file.

Free · Notes and knowledge · Individuals and families

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A password manager that stores your vault on your own devices and syncs them directly, with browser autofill.

Since 2023

Free · Security and passwords · Individuals and families

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Records visitor sessions on your site and uses AI to point out errors, rage clicks and drop-offs, alongside heatmaps.

Free plan · Website analytics

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Records which apps and websites you use on your computer or phone so you can see where your time goes, stored locally.

Free · Time tracking · Individuals and families

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Build and A/B test pricing tables for your website without code, with Stripe revenue insights.

Since 2024

Free plan · Website builders · Online sellers

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Build popups, multi-step forms, quizzes and on-site widgets to collect leads and sales from website visitors.

Free plan · Forms and surveys

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Keep track of your investments, net worth, spending and retirement plans in an open-source app that runs on your own devices.

Since 2024

Free plan · Money and budgeting · Individuals and families

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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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Handles in-app subscriptions for mobile apps, with a paywall builder, price tests and revenue reports for app teams.

Free plan · Payments and checkout · Developers

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Design, send and measure email campaigns and push messages, with a WooCommerce plugin for online shops.

Free plan · Email marketing

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Turn app features on or off and roll them out to chosen users without redeploying, with unlimited team seats.

Free plan · Developer tools · Developers

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Time tracker that runs in the browser and keeps entries on your device, with optional encrypted sync, for freelancers and staff.

Since 2023

Free · Time tracking · Individuals and families

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Lets app and game developers change settings and run A/B tests remotely, without shipping a new build or waiting for store review.

Since 2024

Developer tools · Developers

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A free desktop app for editing Hugo static websites on your own computer and publishing them through Git.

Since 2023

Free · Website builders · Creators and writers

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Feature flag service that lets software teams roll out, test and switch off features in production without redeploying.

Subscription · Developer tools · Developers

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Mobile apps and a browser extension that store your passwords and two-step login codes on your own device, with no account.

Security and passwords · Individuals and families

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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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Keeps a local SQLite copy on each client in sync with your Postgres, MongoDB, MySQL or SQL Server backend for offline-first apps.

Since 2023

Free plan · Developer tools · Developers

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Note taking app in Markdown for Apple devices that stores each note as a plain file inside a folder of your choosing.

Free · Notes and knowledge · Individuals and families

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Keeps a local record of your screen, audio and apps so AI tools can search your past work and spot tasks to automate.

Free plan · Automation and integrations

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A desktop app for sending and testing REST, GraphQL, gRPC and WebSocket requests, stored locally and synced through Git.

Since 2025

Subscription · Developer tools · Developers

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A Mac clipboard manager that stores your copy history on the device, sorts it by type and can search text in screenshots.

Free · Focus and productivity · Individuals and families

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Add one script to your site for widgets like local pricing, exit offers and social proof to lift sales.

Since 2025

One-off payment · Marketing and social · Online sellers

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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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Create branded short links and QR codes, track clicks and route visitors by device or country, for marketing teams.

Since 2026

Free plan · Marketing and social

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Mac app that records and transcribes meetings on your machine, labels speakers and passes the live text to your AI for notes.

Since 2026

Free trial · Notes and knowledge

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A notes app that auto-tags your notes, links related ideas, searches by meaning and writes summaries from them.

Since 2026

Free plan · Notes and knowledge · 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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Shows different text, popups or redirects to each WordPress visitor based on location, device or behaviour.

Free plan · Marketing and social

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Feature flags and A/B tests that read results from your own data warehouse, for software product teams.

Free plan · Website analytics · Software companies

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A private mood journal for iPhone and Mac that logs gratitude, sleep and screen time in a couple of minutes a day.

Since 2026

Health and habits · Individuals and families

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A day planner for iPhone that lays tasks on a visual timeline and keeps your plans on your device, with an optional Pro tier.

Free plan · Focus and productivity · Individuals and families

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WordPress plugin for building popups and bars with display rules, A/B tests and email signup capture.

Marketing and social

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Edit, annotate, redact, OCR and reorder PDF pages in your browser, with files kept on your own computer.

Since 2026

Documents and e-signature

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WordPress plugin that pins a floating button to blog posts so bloggers get more clicks on offers and contact links.

Free plan · Marketing and social · Creators and writers

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Build a pre-launch waitlist page where signups earn rewards for referring friends, with emails and A/B tests.

Since 2025

Free plan · Marketing and social · Online sellers

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A quick-starting desktop editor for plain Markdown files that you can also hand to coding agents for writing prompts.

Since 2026

Free plan · Notes and knowledge · Individuals and families

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A Mac menu bar app that keeps your clipboard history searchable by keyboard, with pinning and everything stored locally.

Since 2026

Free · Focus and productivity · Individuals and families

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Decrypts an Android WhatsApp backup on your Mac and saves it as a browsable archive file you keep forever.

Since 2026

One-off payment · Something else · Individuals and families

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A design editor that reads and saves Figma .fig files, works on your own computer and can be driven by scripts or AI agents.

Free · Design and images · Agencies

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Describe a task in a sentence and get an automation workflow you can preview, cost out and approve before it runs.

Since 2025

Subscription · Automation and integrations

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WordPress plugin to A/B test pages, watch session recordings and heatmaps, and track WooCommerce revenue by variant.

Free trial · Website analytics · Online sellers

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Mac and Windows app that turns PDFs, Office files, scans and web pages into tidy Markdown or JSON without sending them anywhere.

Since 2026

One-off payment · Documents and e-signature · Individuals and families

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Native Mac, iPad and iPhone app for Excalidraw sketches with a local file library, history, search and cloud folder sync.

Design and images

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Tracks materials, recipes, production runs, jobs and true costs for small workshops that outgrew spreadsheets.

Since 2026

Free · Inventory and stock · Manufacturing