WeVideo is a web-based video editor. You can upload video, image and audio files, and then optionally add in text, transitions, effects or a recorded narration using its built-in recording device. WeVideo allows you to collaborate with other people on a video project and also lets you easily post your video creations to Facebook, Twitter and other social media sites.
Its free plan offers 1GB storage and 15 minutes of exports/month at 360p. Other plans are available for purchase if you need more space or want to export your video in a higher quality.
Check it out here: https://www.wevideo.com/