The best replacement for optifine is mcpatcher.

The best alternatives to optifine are rated as following:
★★★★★  mcpatcher
★★★★  mc patcher

Your alternative for optifine is not listed? Suggest!
Speaking about optifine, one probably shouldn't forget about forge.

Other search terms related to optifine and their ratings are:
★★★★★ forge
★★★★ forge 1.7.2
★★★★ forge 1.6.4
★★★ ftb
★★★ pixelmon
★★★ shaders
★★★ shaders 1.7.2
★★ ftb monster
★★ attack of the b team
★★ tekkit
★★ hexxit
★ x ray
★ magic launcher
★ minecraft forge
★ modloader
★ mcpatcher
xray 1.7.2
You have in mind a companion for optifine and it is not yet here? Propose!



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optifine
mcpatcher
mc patcher