Microsoft Lync vs WebEx

Microsoft Lync
Microsoft Lync (formerly Microsoft Office Communicator) and Microsoft Lync for Mac are instant messaging clients used with Microsoft Lync Server or Lync Online available with Microsoft Office 365. Basic features include instant messaging, Voice Over IP and Video Conferencing inside the client software.
Web conferencing lets you connect with anyone, anywhere, in real time. WebEx combines desktop sharing through a web browser with phone conferencing and video, so everyone sees the same thing while you talk. WebEx free alternatives are Skype, Google Hangouts. If you are looking for open-source self-hosted WebEx alternatives pay attention to Jitsi and Rocket.Chat.
Comparing Microsoft Lync vs WebEx is like comparing apples to oranges. Because your business is unique and nobody except you can decide, which is better for your company. But we can add some fun to your research and suggest some new comparison parameters.

Ok, now let's compare the UI. Looks like Microsoft Lync has more user-friendly interface than WebEx because it's bigger. At least on our screenshots

To compare the popularity of the solutions we counted how many alternatives people search for each of them on the Internet. And it turns out that WebEx is more popular than Microsoft Lync

Now let's look at the recent activities of our competitors:

- Microsoft connected Lync and Skype (in 2013)
- Free Webex is already available (in 2012)
- WebEx adds free version, online office workspace (in 2011)
- Lync 2010 becomes social (in 2010)
- Cisco announced upgrades to its WebEx SaaS meeting portfolio (in 2009)
- WebEx Brings Online Meetings to the iPhone (in 2009)
- WebEx adds Mac support to remote desktop service (in 2008)
- Webex's MeetMeNow gets video upgrades, MS Office integration (in 2007)
- Cisco buys WebEx (in 2007)
- Look alert-WebEx is watching (in 2004)

Looks like WebEx was recently more active than Microsoft Lync (at least in our news).