No moat. Still in business.

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A hosted API for product teams to send app notifications over email, SMS, push, chat and an in app inbox.

Since 2020

Free plan · Transactional email · Developers

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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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Keeps pull request discussions in sync across GitHub, Slack and VS Code so dev teams and AI agents review code faster.

Free plan · Developer tools · Developers

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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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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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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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Gives you an email address that forwards anything sent to it into a WhatsApp chat or group, attachments included.

Free plan · Automation and integrations

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Freelancers get new Upwork jobs matching their filters in Telegram or Slack seconds after they are posted.

Since 2025

Subscription · Something else · Freelancers

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One API and dashboard for sending product notifications by email, SMS, push, Slack and in-app inbox.

Since 2022

Subscription · Transactional email · 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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Observability built on OpenTelemetry for software teams, covering logs, traces, dashboards and alerts with cost control.

Since 2024

Free trial · Uptime and monitoring · Developers

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Application performance monitoring with logs, traces, metrics and alerts on OpenTelemetry, in the cloud or self-hosted.

Since 2022

Free plan · Uptime and monitoring · Developers

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Runs regular speed tests on your connection and keeps a history so you can check your ISP delivers what it promised.

Free · Uptime and monitoring · Individuals and families

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Lets AI teams version and test prompts, run evaluations and trace production agent calls outside the codebase.

Since 2023

Developer tools · Developers

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Traces AI agent runs in production, flags silent failures and lets teams test changes in simulation before release.

Since 2025

Free plan · Uptime and monitoring · Developers

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Hosted service that sends webhooks for software teams, with retries, dead letter queues and delivery logs.

Since 2025

Free plan · Developer tools · Developers

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Runs automations that triage production errors, watch deploys and answer support questions for software teams.

Since 2026

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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Records every AI agent decision in a signed, tamper-evident log so teams can show regulators what their AI did under the EU AI Act.

Since 2026

Free plan · Developer tools · 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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Stores and searches logs, metrics and traces at low storage cost, as a cloud service or software you host yourself.

Free plan · Uptime and monitoring · Developers

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Runs versioned SQL and Python database migrations with dry runs, history checks and rollbacks, for Python teams.

Since 2026

Free plan · Developer tools · Developers

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Mac app that gathers questions from your terminal coding agents into one inbox so you can answer by key or voice.

Since 2026

Free · Developer tools · Developers

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A Mac app for working with GitHub, covering notifications, pull request review, projects and fast keyboard search.

Since 2026

Free plan · Developer tools · Developers

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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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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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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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Send app events with one HTTP call, then search them and get them delivered to Slack, Discord, Telegram or webhooks.

Since 2026

Free plan · Developer tools · Developers

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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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Mac menu bar app that alerts you when a Cursor, Codex or Claude Code session wants input, so you can reply or switch to it.

Since 2026

Free · Developer tools · Developers

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Point any domain at any URL with automatic HTTPS, path rules and hit analytics, no server to run.

Free plan · Website builders

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Gives AI coding agents a way to phone you when they are stuck on a choice, and turns what you say back into text for them.

Since 2026

Developer tools · Developers

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Deploys apps from a GitHub repo onto a server in your own cloud account, with HTTPS and redeploys on each push.

Since 2026

Free plan · Developer tools · Developers

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Security log search, detection rules and OpenTelemetry data in one store, run in the cloud or on your own servers.

Since 2026

Uptime and monitoring · Software companies

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Captures full stack session data from production and passes it to coding agents like Claude Code so they can fix bugs.

Since 2025

Developer tools · Developers

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An AI agent inside Jupyter that writes and runs Python cells, reads the results and fixes errors during data analysis.

Since 2025

Free plan · Developer tools · Developers

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Build no-code dashboards from widgets that read from GitHub, Slack, Stripe, Google Workspace and your own APIs, then share by link.

Since 2025

Free plan · Data and spreadsheets

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Hosting for Python FastAPI apps that deploys with one command and handles scaling and HTTPS for developers.

Since 2026

Developer tools · Developers

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Sends requests to many AI models through one API with fallbacks, and records traces and evals of each agent run.

Free plan · Uptime and monitoring · Developers

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Run long background tasks and AI agents in TypeScript with retries, queues, schedules and tracing, hosted or on your servers.

Since 2023

Developer tools · Developers

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Sets up and manages your own cloud server to deploy Django apps, with a dashboard, CLI and API.

Since 2021

Free plan · Developer tools · Developers

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Gathers metrics, logs and traces using eBPF and explains why production incidents happened, for SRE and DevOps teams.

Since 2025

Subscription · Uptime and monitoring · Developers

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Open-source observability that gathers metrics, logs and traces with eBPF and points DevOps teams to the root cause of outages.

Since 2024

Uptime and monitoring · Developers

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Posts tidy GitHub and GitLab pull request updates to Slack or Teams, with reviewer DMs and daily stale PR digests.

Since 2025

Free plan · Developer tools · Developers