No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- Transformy
An API that converts HTML pages and URLs into PDF files for developers building apps.
Since 2015
Free plan · Documents and e-signature · Developers
- Assertible
Runs automated tests against your APIs and websites after each deploy and on a schedule, with alerts on failure.
Since 2016
Uptime and monitoring · Developers
- ApyHub
One subscription to a catalogue of ready APIs for documents, verification, media and AI tasks, aimed at developers building products.
Since 2023
Free plan · Developer tools · Developers
- Bannerify
An API that fills a designed template with JSON data and returns finished images or PDFs, such as banners, invoices and certificates.
Since 2024
Free plan · Design and images · Developers
- Formfeed
Fills templates with data to produce PDFs, images and validated ZUGFeRD electronic invoices, from code, AI agents or no code tools.
Free plan · Invoicing and billing · Developers
- PDF-API.io
Build PDF templates in a visual or HTML editor, then fill them with data by API or Zapier to make invoices and other files.
Free plan · Documents and e-signature
- PDFMonkey
Design PDF templates in a dashboard, send JSON to an API and get finished documents back, with 20 free a month.
Free plan · Documents and e-signature · Developers
- Callosum
Desktop app for designing, calling and documenting APIs that keeps an OpenAPI spec in sync, offline with no login.
Since 2024
Free trial · Developer tools · Developers
- APITemplate.io
Generates PDFs and images from saved templates, HTML or web pages through an API or no code tools such as Zapier.
Documents and e-signature · Developers
- Doczilla
An API that renders HTML and saved templates into PDFs and screenshots, for developers who need documents from their apps.
Pay as you go · Documents and e-signature · Developers
- Dynamic Document API
Send JSON to a REST API and get back invoices, reports, certificates or social images built from your own templates.
Free plan · Documents and e-signature · Developers
- InstantCLI
Builds a command line tool for your API from its docs, with binaries, install scripts and updates, so AI agents can use it.
Since 2026
Developer tools · Developers
- Oicana
Lets developers create PDFs such as invoices and reports from Typst templates inside their own servers.
Since 2026
Free trial · Documents and e-signature · Developers
- Beeceptor
Spin up hosted mock servers from OpenAPI, SOAP, GraphQL or gRPC specs so teams can test without the real backend.
Since 2025
Free plan · Developer tools · Developers
- Orshot
Design a template once, then fill it with data from your API or no-code tools to produce images, PDFs and videos automatically.
Since 2025
Free plan · Design and images · Agencies
- MintPDF
An API and MCP tool that turns Markdown or HTML into clean PDF files for developers and AI agents.
Since 2026
Free plan · Documents and e-signature · Developers
- Papermill
API that takes Markdown or JSON plus a template and returns a laid-out PDF, for apps that generate documents.
Since 2026
Free plan · Documents and e-signature · Developers
- SpecShield
Compares your OpenAPI spec on each pull request and blocks merges that would break the services using your API.
Since 2026
Free plan · Developer tools · Developers
- Pitch31
Upload an OpenAPI or Postman file to get a chat agent that lets your users run your software's actions in plain language.
Since 2025
Free plan · Developer tools · Software companies
- Octri
Generates API docs, client libraries in ten languages and an MCP server from your OpenAPI file, plus usage monitoring, for API providers.
Since 2026
Free plan · Developer tools · Developers
- Routebase
Keeps API specs, mock servers, tests and published docs in step from a single spec, for software teams.
Since 2026
Free plan · Developer tools · Developers
- DollarDeploy
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
- Scalar
Turns an OpenAPI file into hosted API docs, client SDKs and an MCP server for software companies.
Developer tools · Developers
- CxReports
Builds branded PDF reports, statements and invoices from your data and sends them to clients on a schedule, without coding.
Free trial · Documents and e-signature
- TemplateFox
Build invoice, certificate or label layouts in a visual editor, then turn your data into PDFs and images by API or no code tools.
Free plan · Documents and e-signature · Online sellers
- PDFBolt
An API for developers that renders HTML pages, URLs or AI-drafted templates into PDF files, processed in the EU.
Since 2025
Free plan · Documents and e-signature · Developers
- Treblle
Watches live API traffic so engineering teams can see usage, catch problems and enforce API standards.
Uptime and monitoring · Developers
- Appliku
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
- Inkspan
An API that lets developers create PDFs from HTML or Markdown, merge or split files, pull out tables and translate documents.
Since 2026
Free plan · Documents and e-signature · Developers