Find the free tier that fits your stack.

TemplateFox

TemplateFox is a PDF generation API that renders PDFs from HTML templates and structured data. Developers can create templates in a visual editor, then generate documents through REST API calls or no-code integrations such as Zapier, Make, n8n, Airtable, and Bubble.

Feedback Fish is a feedback collection widget that lets a website or app capture issues, ideas, and compliments and send them to email, with a dashboard for reviewing submissions.

Free Mail Tester

Free Mail Tester is a web-based email deliverability checker that generates a unique test address, accepts a message sent from a real mail client or campaign tool, and returns a 0–100 score with analy...

OpenCage

OpenCage provides a geocoding API and geosearch service that converts coordinates to places and place queries to coordinates using open data sources, primarily OpenStreetMap. The API returns formatted...

Checkbot

Checkbot is a Chrome extension that crawls websites and runs SEO, speed, and security checks across hundreds of pages at once. It reports issues such as broken links, duplicate titles, invalid HTML, insecure pages, redirect chains, mixed content, and other web best-practice violations.

Quant-UX is a web-based research, usability testing, and prototyping tool. It provides a visual editor for creating interactive prototypes, then lets users share a link to collect user feedback, run tests, and review analytics in the same product.

Ente Photos

Ente Photos is a cross-platform photo backup and sharing service that stores images and videos with end-to-end encryption. The service supports Android, iOS, web, Mac, Linux, Windows, and a command-line interface, and it keeps backups in three locations.

Vaadin

Vaadin is an open-source web framework for building enterprise web applications in Java. It provides server-side UI development with a unified Java stack, allowing developers to build backend logic and user interfaces in the same language without HTML or JavaScript for most application code.

Pulsetic

Pulsetic is a website uptime monitoring service that checks websites, SSL certificates, ports, TCP endpoints, keywords, cron jobs, APIs, IP addresses, and domains. It sends downtime alerts by email, S...