Skylight , a TikTok alternative built on open source technology, is benefiting from concerns that arose over TikTok U.S.’s change in ownership last week . The startup, a maker of a short-form, vertical video app similar to TikTok, says it has now topped over 380,000 users and is continuing to grow after a busy weekend. Launched last year and backed by Mark Cuban and other investors, Skylight’s mobile app is built on the AT Protocol, the technology that also powers the decentralized X rival,