HBE Germania

"The Germania is Homebrew's take on the classic Rangemaster treble booster from the 1960s, and offers up to 20dB of gain to drive your amp.
In its 'hi-fi' setting, you get a full range boost, but a 'lo-fi' setting offers a more focused boost in one of three frequency ranges controlled with the 3Q switch. Boost in hi-fi mode is bright, with some germanium-driven grit to it, and as you turn the knob clockwise there's a massive amount available. In lo-fi mode, the three settings offer cut in the bottom but different midrange emphasis.
This pedal works best with an amp that's already overdriven, and especially one that's dark-sounding - kick it in to take it up another level and squeeze out some harmonics - it did a fine job with our old non top-boost AC30. It's also great with a dirt pedal.
The Germania can deliver a raw and aggressive boost, but that tonal shift won't necessarily suit all amp settings, so try it out with your own." 
You can find the original FSB thread here.

HBE Power Screamer

Haven't counted, but i believe we have fair number of Tubescreamers and derivatives listed here. And here's one more. Tweaked with couple of mods to low frequency response and gain. Switchable diodes etc. The boost switch is a stomp and with 2PDT you can use the second pole for a LED. I've omitted the 27K resistor from the output, but if you want yours verbatim, just solder 27K resistor between Level lugs 1 & 2.

The Power Screamer is our flagship pedal. Tonally wide ranging and transparent, The Power Screamer "oozes" vintage, tube like overdrive. Based on the JRC4558D The Power Screamer features: Adjustable Gain, Level and Tone controls, 3-Way Diode Select and footswitchable Boost.