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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A Chrome extension that strips clutter from web pages and adds reading rulers, text to speech and PDF tools for easier reading.

Since 2019

Focus and productivity · Individuals and families

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Turns scripts, documents and books into narrated audio with many AI voices, voice cloning and control over tone and pacing.

Since 2018

Free plan · Video and audio · Creators and writers

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Collects traces, metrics and logs through OpenTelemetry for engineering teams, hosted or on your own servers.

Since 2022

Free trial · Uptime and monitoring · Developers

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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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Turns articles, documents or a topic into spoken audio and podcasts with editable scripts and many AI voices.

Since 2024

Free plan · Podcasting · Creators and writers

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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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Adds a panel so low-vision visitors can change font size, colours and images, meeting Russian GOST accessibility rules.

Free · Website builders

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Save articles, follow RSS and podcasts, have articles read aloud and send them to a Kindle or other e-reader.

Since 2026

Notes and knowledge · Individuals and families

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Lets teams build, test and run AI voice agents that make and answer phone calls, including menu navigation and custom voices.

Since 2025

Customer support

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An install-and-go app that adds accessibility tools to WordPress, Shopify or Wix sites to help meet ADA and WCAG rules.

Legal and compliance

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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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Adds a text-to-speech player to blogs and publisher sites so visitors can listen to articles.

Since 2019

Free plan · Video and audio · Creators and writers

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An iPhone app that reads PDFs, web pages and scanned text aloud, for students and anyone who would rather listen.

Video and audio · Individuals and families

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Converts news and blog articles into spoken audio with cloned or stock AI voices, for publishers.

Video and audio · Creators and writers

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WordPress plugin that adds a listen button so visitors can hear posts read aloud in natural voices.

Free plan · Video and audio · Creators and writers

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Mac menu bar app that grabs text from any part of the screen, including images and videos, using local OCR.

Since 2024

One-off payment · Focus and productivity · Individuals and families

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Clone your voice from a short sample and generate speech in 13 languages with adjustable emotion, for podcasters and video makers.

Since 2024

Free plan · Video and audio · Creators and writers

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A phone app that reads ebooks, documents, websites and printed pages aloud in 40 languages, useful for busy or visually impaired readers.

Video and audio · Individuals and families

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API that builds videos from templates and data, for teams making ads, social clips and product videos in bulk.

Free plan · Video and audio · Online sellers

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Turns articles, PDFs and ebooks into natural sounding audio you can play on your phone or in a podcast player.

Since 2024

Free plan · Video and audio · Individuals and families

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Reads EPUB, PDF and other documents aloud with highlighted read-along, using local or cloud voices, for readers and listeners.

Free · Video and audio · 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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Lets teams building AI agents run simulations, evaluate outputs and trace failures in production.

Free plan · Developer tools · Developers

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A phone app that turns typed text into narrated audio with many voices, effects and music, and saves it as MP3 for social videos.

Video and audio · Creators and writers

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Chrome extension that speaks articles, PDFs and chosen passages, marking each word as it reads, using voices processed locally.

Since 2026

Free plan · Focus and productivity · Individuals and families

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Tracks cost, calls and errors in AI apps and agents through OpenTelemetry, either self-hosted or on their managed cloud.

Since 2026

Subscription · Uptime and monitoring · Developers

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An observability backend on ClickHouse that takes logs, metrics, traces and profiles and lets teams query them in Grafana.

Free plan · Uptime and monitoring · Developers

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Turns website articles into AI-voiced audio with an embedded player, helping publishers add listeners and ad revenue.

Video and audio · Creators and writers

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Save articles, videos and PDFs to read later in a clean view, listen with text to speech, and keep a reading streak.

Since 2026

Free plan · Notes and knowledge · Individuals and families

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One API key and endpoint for calling many video, image, music, speech and language models, paid per use.

Since 2026

Pay as you go · Developer tools · Developers

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Clone a voice from a short audio clip and use it to turn text into speech in four languages.

Since 2025

Free plan · Video and audio · Creators and writers

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Monitors AI agents and LLM apps running live for engineering teams, works out why they break and proposes prompt fixes.

Since 2026

Free · Uptime and monitoring · Developers

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Tracing and anomaly alerts for AI agent pipelines, so developers catch failures they were not watching for.

Since 2026

Free plan · Uptime and monitoring · Developers

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A Mac PDF reader for studying hard documents: ask questions about the page, get summaries and quizzes, and have passages read aloud.

Since 2026

Notes and knowledge · Individuals and families

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Adds AI voice narration to website articles, product pages and lessons so visitors can listen instead of read.

Free plan · Video and audio · Online sellers

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Tracks the AI agents a company runs in production, showing their costs, flagging leaked personal data and enforcing usage rules.

Since 2026

Uptime and monitoring · Developers

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A phone app that reads books, PDFs, web links and scanned pages aloud in AI voices across more than 50 languages.

Video and audio · Individuals and families

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A Chrome extension that reads any web article out loud in natural sounding voices so you can listen instead of reading.

Since 2026

Free plan · Video and audio · Individuals and families

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Collects traces, logs, metrics and session replays from OpenTelemetry for $39 a month, with EU hosting or self-hosting.

Subscription · Uptime and monitoring · Developers

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Observability for logs and traces that answers questions in Slack and drafts fix pull requests when alerts fire.

Since 2026

Free plan · Uptime and monitoring · Developers

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Stores and queries logs, metrics and traces on object storage at low cost, as a managed cloud or on your own servers.

Since 2026

Uptime and monitoring · Developers

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Upload a PDF and listen to it read aloud, follow along sentence by sentence, ask questions and download MP3s by chapter.

Since 2026

Free plan · Video and audio · Individuals and families

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Turns a written script into expressive MP3 voiceovers, with direction for tone and pace, for video makers and creators.

Since 2026

Free plan · Video and audio · Creators and writers

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Traces AI coding agent runs, spots where they fail and enforces rules that stop repeat failures as they happen.

Since 2026

Free plan · Uptime and monitoring · Developers

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Ties logs and traces from iOS and Android apps to backend services so app teams can trace a user problem to its cause.

Since 2025

Uptime and monitoring · Developers

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Mac and iPhone app that clones voices from short samples and reads text aloud offline, including whole audiobooks.

Since 2026

Free plan · Video and audio · Individuals and families

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A Mac menu bar app that reads any selected text aloud with offline speech models, including local voice cloning.

Since 2026

Free · Video and audio · Individuals and families