Updates with posts from Michael Dell, Ellen DeGeneres and others.



) -- Minutes after Apple announced that co-founder Steve Jobs had died, fans and peers shared their memories and condolences on Facebook, Twitter and other social networks.

Here are some of their posts:

Microsoft Co-Founder Bill Gates

: For those of us lucky enough to get to work with Steve, it's been an insanely great honor. I will miss Steve immensely.

Melinda and I extend our sincere condolences to Steve Jobs' family & friends. The world rarely sees someone who made such a profound impact.

Facebook CEO Mark Zuckerberg on his Facebook page

: Steve, thank you for being a mentor and a friend. Thanks for showing that what you build can change the world. I will miss you.

Michael Bloomberg, mayor of New York, on Twitter

: Steve's passionate belief in the power of technology brought us knowledge and power that is reshaping the face of civilization.

Steve Jobs saw the future and brought it to life long before most people could even see the horizon

Steve Jobs was a genius who will be remembered with Edison and Einstein. His ideas will shape the world for generations

President Obama on Steve Jobs via the White House Twitter feed

: Bold enough to believe he could change the world and talented enough to do it ... He changed the way each of us sees the world"

Steve Wozniak, Apple co-founder, via Twitter

: Keeping family dinner despite the disturbing news.

Google Co-Founder Larry Page via Google+

: I am very, very sad to hear the news about Steve. He was a great man with incredible achievements and amazing brilliance. He always seemed to be able to say in very few words what you actually should have been thinking before you thought it. His focus on the user experience above all else has always been an inspiration to me. He was very kind to reach out to me as I became CEO of Google and spend time offering his advice and knowledge even though he was not at all well. My thoughts and Google's are with his family and the whole Apple family.

Google Co-Founder Sergey Brin via Google+

: From the earliest days of Google, whenever Larry and I sought inspiration for vision and leadership, we needed to look no farther than Cupertino. Steve, your passion for excellence is felt by anyone who has ever touched an Apple product (including the macbook I am writing this on right now). And I have witnessed it in person the few times we have met.

On behalf of all of us at Google and more broadly in technology, you will be missed very much. My condolences to family, friends, and colleagues at Apple.

AOL Co-Founder Steve Case via Twitter

: I feel honored to have known Steve Jobs. He was the most innovative entrepreneur of our generation. His legacy will live on for the ages.

Arnold Schwarzenegger, actor and former governor of California, via Twitter

: Steve lived the California Dream every day of his life and he changed the world and inspired all of us.

TheStreet's Jim Cramer via Twitter

: I, like everyone here, mourn the passing of the greatest industrialist and inventor of our lives.

Dell CEO Michael Dell via Twitter

: Today the world lost a visionary leader, the technology industry lost an iconic legend and I lost a friend and fellow founder. The legacy of Steve Jobs will be remembered for generations to come. My thoughts and prayers go out to his family and to the Apple team.

Comedian Patton Oswalt via Twitter

: RIP Steve Jobs. Closest thing we had to Tony Stark.

Ellen DeGeneres, talk show host, via Twitter

: I just finished my show and I heard the news about Steve Jobs. He was an amazing man with an incredible vision. He changed the world.

Cyclist Lance Armstrong via Twitter

: Devastated 2 hear about the passing of Steve Jobs. Was blessed 2 have the opportunity to spend time w/ him on several occasions. May he RIP.

More About Steve Jobs:

Steve Jobs, Tech Visionary, Passes Away

Steve Jobs: Innovator-in-Chief