plot.ly

Responsive images as a service. It provides an image CDN, a media processing API, and a frontend library to automate image optimization. The service is free for up to 3GB of traffic/per month.

Handles file uploads and encoding of video, audio, images, documents. Free for Open source, charities, and students via the GitHub Student Developer Pack. Commercial applications get 2 GB free for test driving

Create all the optimized versions of your images and videos. For Free. In bulk. For each image, you get the following formats: AVIF, WEBP and JPG in the three selected resolutions (desktop, tablet, mobile) For videos, you get: WebM (codec VP9), MP4 (codec HEVC aka H.265) and MP4 (codec AVC aka H.264

P2P file syncing, free for up to 2 users

Generate embeddable image charts, graphs, and QR codes

You can use Podio with a team of up to five people and try out the features of the Basic Plan, except user management

Encrypt, share, copy, and move all your cloud storage files from one place. The basic plan provides unlimited file transfer with 250 MB max. file size and allows five encrypted files

Anonymous JSON storage for scripts and tiny apps. No signup required; uses Master AID for updates and Read-Only RID for public fetching. Free tier includes 1 bucket (1MB limit) with a 72h inactivity scavenger policy.