ActionStitch runs on Windows and macOS. Currently it is under beta testing and no license is required to run the program. You can download the program and try to stitch these two videos (left and right) taken by GoPro Hero Black 10.

File name Type OS CPU Size SHA256 Checksum
actionstitch_1.0.exe Installer Windows x64 101,500,136 ae5a79687f9b9e1da1a14939d65608d66c026ad56b924603e552be8de1435f5e
actionstitch_1.0.dmg DMG macOS x64 108,240,856 cb8f885a44e3e23b2ac470b99cb82974cf0ed5abb2b9bd742bc7fc3ca24b93d9