Complex sentence: Tor Browser (previously known as Tor Browser Bundle or TBB) is the Tor Project's flagship product, which consists of modified Mozilla Firefox ESR web browser, TorButton, TorLauncher, NoScript and HTTPS Everywhere Firefox extensions and Tor proxy.
Split into simpler sentences: Tor Browser (previously known as Tor Browser Bundle or TBB) is the Tor Project's flagship product. It consists of a modified Mozilla Firefox ESR web browser, the TorButton, TorLauncher, NoScript and HTTPS Everywhere Firefox extensions and the Tor proxy.