Kooha
Category: Creative & Multimedia.
GPL-3.0-or-later☁️ Hosted only
MergeFrame is a free web-based tool that combines several images into a single grid — ideal for before/after collages, mood boards, AI prompt references and social media posts. Images are processed entirely in your browser using the HTML5 Canvas API, so they never leave your device. No account is required and free exports carry no watermark.
NOT open source. MergeFrame is proprietary freemium software. The free plan allows 2 exports per day at 4000px; Pro is $7/month for unlimited exports, with WebP/PDF formats and batch processing. The tool is free to use but the source code is not public.
Any modern browser (client-side web app)