There are many alternatives to KeepVid for Mac and since it's discontinued a lot of people are looking for a replacement. The best Mac alternative is youtube-dl, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to KeepVid and many of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to KeepVid are Video DownloadHelper (Freemium), 4k Video Downloader (Freemium), ClipGrab (Free, Open Source) and Youtube Video and Audio Downloader (Free, Open Source).
Video Grabber is the free online app to help you grab videos from all online video sites like vimeo, blip.tv, YouTube etc, you only need to copy and paste video URL address, the video will be grabbed automatically in FLV, MP4, WMV format.
With TV4ever thousands of users are * recording movies, tv series and news * from hundreds of tv sites * all over the world (Vimeo, Daily Motion, DR, ITV, ZDF, France.tv etc. etc.) It's free. There's a 2 second installation time.