Self-hosted browser based collaborative video/audio/image review and annotation tool. Allows users to upload, comment and draw on clips. Also support subtitles.


Flask is described as 'Provides visual video annotation, time-stamped comments, and screen-recorded feedback in a shared workspace tailored for creative team review cycles' and is a Video Sharing tool in the video & movies category. There are more than 25 alternatives to Flask, not only websites but also apps for a variety of platforms, including SaaS, iPhone, Mac and iPad apps. The best Flask alternative is Clapshot, which is both free and Open Source. Other great sites and apps similar to Flask are Frame.io, Whelm, Approved Social and Filestage.
Self-hosted browser based collaborative video/audio/image review and annotation tool. Allows users to upload, comment and draw on clips. Also support subtitles.


A robust video collaboration tool for over 300,000 filmmakers with secure workspaces, combining Dropbox, Vimeo, and email. Offers time-based comments, video annotations, cloud transcoding, version control, and mobile access for streamlined workflow.




Whelm is a suite of free tools for freelancers. It has client management suite to handle invoices, contracts, project management, and more, plus a built-in media review tool for quick and easy approvals on your work.




The only ad feedback and approval tool specifically designed for digital marketers and internal marketing teams Increase the LTV of your clients. Speed up time to launch campaigns. Reduce workload of your team.



Filestage is the review and approval software that runs itself. You can share any content, set your due dates, then let the feedback come to you – freeing you up to focus on what you do best.



MarkUp allows you to turn your website into a dynamic canvas ready for feedback and collaboration. Streamline your feedback with a quicker, easier, and clearer process.




ftrack is a cloud-based creative project management tool for production tracking, digital asset management, and team collaboration. Used in VFX, games, and design.




Media collaboration workspace for creative teams offering real-time client feedback, versioning, asset management, customizable workflows, secure role-based workspaces, advanced precision commenting, scalable plans, storyboarding, and AI-powered project tools.




QuickReviewer is designed for Creative teams, Design houses, Advertising/Marketing agencies, So that they can collaborate with each other for a simple way to share, review, comment and approve.




Dailies, review and approval tool for professional video post production. Share media content securely with team members and clients.




A collaborative platform for creative review
ReviewStudio provides an easy, visual interface to view, markup and approve video, images and PDF files.



