A resource for VSTs and samples, both free and paid.
Dexed is an open source implementation of the Yamaha DX7 FM Synthesis engine (along with some related synths).
A huge number of DX7 patches are availble online. Bobby Blues has one omnibus collection.
Mono/Fury is a free emulation of the Korg Mono/Poly.
TAL-U-NO-LX is a high quality emulation of the Roland Juno-60.
TAL-Chorus-LX is a free implementation of the Juno-60's chorus unit.
TAL-BassLine-101 is a high quality emulation of the Roland SH-101, with a few extra features.
PG-8X is an emulation of the Roland JX-8P.
Collected links to free samples of vintage drum machines. Sample quality and organization various.
- Music Machines - Roland drum machines, others
- Wave Alchemy - LinnDrum
- Trash Audio - LinnDrum LM2
- Trash Audio - Roland TR-808
The Korg Collection (previously "Korg Legacy Collection") are the official VSTs of various Korg synthesizers. The UI on the ARP Odyssey is new; the others are pretty old and behind their iPad ports. All the sounds you are looking for are there though.
The lineup includes:
- ARP Odyssey
- Korg MS-20
- Korg Polysix
- Korg Mono/Poly
- Korg M1
- Korg Wavestation
A separate effects unit is included in the bundle as well.
Arturia V includes high-quality emulations of 21 digital, analog and electromechanical instruments as well as many models of piano.
Samples from Mars sells libraries of high quality samples of most of the usual classic drum machines. Their "everything" pack goes for $99, but has been seen on sale for even less. Costs money, but is possibly the easiest way to get these samples as well as pre-built libraries for Ableton and other DAWs.
Note: the Linn samples seem to have been removed from their catalog?
VST Speek is an implementation of the Commodore 64 text-to-speech program "Software Automated Mouth (SAM)". SAM was available for other contemporary 8-bit machines, and each version had its own distinctive sound based on the audio hardware available for the platform.
For "phoneme mode", consult the original manual.