Flagsmith - Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.
pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
ClearFlask - Open-source Product Feedback Tool with a Public Roadmap and Announcements.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request