You can use any actual wavetable synth instead. Try Vital from Vital - Spectral Warping Wavetable Synth Serum, Phase Plant, VPS Avenger Massive X, Omnisphere, UVI Falcon or else.
Sampler:
Eventually the shortcircuit sampler from Vember Audio had osc sync, too. But it seems to be unavailable.
Morpheus could do that as well (32 Bit - not tested) Download Free Stereo FM sampler plugin: Morpheus by Land of Cockaigne (plugins4free.com)
Biotek may also be worth to have a look at:
BioTek 2 | organic synthesizer virtual instrument software - Tracktion
You may want to check this thread as well:
Renoise Sample Editor use as Synthesizer? - Help, Support & Bugs / Beginners Questions - Renoise - Renoise Forums