FileStar - With FileStar you can "do anything with any file".
Anima App - Design, get feedback, convert to code, publish, iterate.
NordLocker - Keeping files in the cloud? Protect them with leading-edge encryption. NordLocker makes file security easy.
Sketch Repo - Collection of resources for anyone who uses Sketch
Storj.io - Storj DCS is a decentralized, encrypted and fast Amazon S3-compatible object storage.
Auto-Layout for Sketch - Responsive design for Sketch