After Working on it alone for a year, the founder and original developer of Nova Launcher Kevin Barry has stopped working on Nova Launcher and the open sourcing efforts. More Info: https://teslacoilapps.com/nova/solong.html
Yes, Widget Locker! I used that too. Now there's KWGT (I think that's how it's spelled) and also KLWP and KLCK. Kustom is the brand and their apps make widgets, live wallpapers, and lock screens, respectively. But Widget Locker came first IIRC.