List of free generator stuff for developerππ½
If you're looking for all programming tools around generator (not just free). Check this page List of generator Programming Tools

DevPal
DevPal is a set of many online developer tools that make developers' everyday work productve
Tag: url-encoder, text-editor, devtool, json, image, generator, encoder, decoder, formatter, productivity

User Initial (UI) avatars
Generate image avatars with user initials for free, just specify name. No limits or registration.
Tag: asset, image, avatar, generator