e-GMAT

I took the e-GMAT online course a little more than a month before my test. The prep material and practice tests helped me quite a bit in my preparations.
I would recommend anyone looking to take an online course to subscribe to the course early in their preparation.
e-GMAT also offers a mentorship program (not sure if that's the correct name). I worked with Dhananjay in the last 19 days of my prep and his feedback was quite helpful. Again this would have been more helpful if I had approached him earlier in my prep.
I like how the course emphasizes on improving ability and does not promote gimmicks. Their meaning approach for sentence correction takes time to implement as a habit, but it works overall. Though they could definitely improve upon their material in the verbal section. In my humble opinion their material is not up to the mark. Though I could say the same about other programs after trying their free tests.
Their "Scholaranium" question bank is of great value once you have exhausted the OG material and the Quant section is more closely aligned with the actual test than the OG.
Over all I was pleased with their program and also see that they continuously update and improve it.