Sine wave generator?

[Gooberpatrol66]

I'm looking for something like this but for Jack.

http://tucows.com/preview/502787/SineGen

Something that puts out sine waves, and has a large tuner bar from 20Hz to 20kHz. Does this exist?

[tramp]

The LV2 Invada test tone plugin come close to it.

[Gooberpatrol66]

Yeah it's pretty good. The knob isn't very precise and the frequencies skip a bit.

[CrocoDuck]

I like to use this to generate signals and analyze them. It is not properly opensource (not all the versions), but it is free and runs on ALSA and JACK.