In the world of tech, 2013 had it all: mystery, rivalry and breach of privacy. There were drastic redesigns, futuristic devices and a 140-character initial public stock offering.
From smartphone ride-sharing in California to Washington revelations from Edward Snowden, here are the top 10 tech storylines of 2013.
10. California paves the way for ride-sharing
Ride-sharing took the main stage in 2013, with Uber, Lyft and Sidecar leading the way.
These mobile app-based services that let users hail rides from others with their smartphones expanded across California and the U.S., fiercely competing against one another while fending off attacks from the taxicab industry.
In Los Angeles, cease and desist letters were issued, and ultimately, the matter of whether these services were legal was not resolved until the California Public Utilities Commission took up the issue.
In September, the regulatory agency approved rules for how these companies would be regulated, making California the first state to regulate ride-sharing companies. The rules make it legal for these companies to operate and set an example for other states to follow.
9. Vine versus Instagram
Twitter countered Facebook's purchase of Instagram in 2012 by launching Vine, a video sharing social network, in 2013.
Vine, which lets users publicly post six-second video clips, exploded almost immediately after it was launched in January -- thanks to hilarious submissions -- and hit 40 million users in August.
Twitter's video app was so successful it ultimately prompted Instagram to add 15-second video capabilities to the photo-sharing app.
8. The rise of Snapchat
The app, which lets users send each other pictures and videos that disappear within seconds after they're viewed, was already one of the hottest start-ups going into 2013.
It lived up to its hype when Facebook offered $3 billion for the company. That was reportedly followed by a $4-billion offer from Google -- both of which were rejected by founders of the Venice-based start-up.
Snapchat is believed to have at least 30 million monthly active users who are sending out 400 million messages every day. And the app hasn't shown any signs of slowing down.
Founders are reportedly holding out for a bigger deal, so look for one of the tech giants to pay a hefty sum for Snapchat in 2014.
7. Yahoo buys Tumblr
The highlight of Marissa Mayer's tenure at Yahoo so far has been the acquisition of Tumblr, a blogging service that has become increasingly popular as a social network, threatening Facebook's standing with younger users.
Yahoo announced its purchase of Tumblr in May, buying the company for $1.1 billion.
But Yahoo has a poor track record of buying hot start-ups and leading them to their demise, so understandably many users were concerned.