http://community.playstarbound.com/...guides-and-general-modding-discussion.106868/ - First post, check under Tools, last position. Simple but it's something. There's also an in-game cheat menu, but it requires SMAPI - http://community.playstarbound.com/threads/smapi-in-game-cheat-menu-v1-2-1-5-mar-2016.108004/
What I'd mostly like to see is an editor that lets you relocate your buildings. Whenever I try to change the coordinates, it corrupts my save game.
what i really wish is inventory managing and changing other stuffs as date/seasons, so the smapi stuff is still limited
http://community.playstarbound.com/threads/stardew-valley-save-editor.108255/ Still a work in progress though