The Internet browser company said Monday that it bought the startup Read It Later, makers of the popular app Pocket, which people use to save web content for later readings and viewings.

Financial terms of the deal were not disclosed.

As a result of acquisition—which Mozilla said is its first—the team behind Pocket will operate as an independent Mozilla subsidiary. The core product will become part of Mozilla’s open-source portfolio of software that coders can alter and contribute to for free.

“We’ve really enjoyed partnering with Mozilla over the past year,” the startup’s CEO Nate Weiner said in a statement. “We look forward to working more closely together to support the ongoing growth of Pocket and to create great new products that people love in support of our shared mission.”

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Mozilla said approximately 10 million people actively use the Pocket app each day across various mobile operating systems, including iOS, Android, and traditional desktop computers.

“Pocket provides people with the tools they need to engage with and share content on their own terms, independent of hardware platform or content silo, for a safer, more empowered and independent online experience,” said Mozilla CEO Chris Beard in a statement.

With the acquisition, Mozilla gains a popular app well-beloved by its users. Still, it’s often the case that when a bigger company acquires a much-loved app, the larger company eventually loses interest in maintaining the app—or decides to incorporate its features into its own products.

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Last year, for example, Microsoft (MSFT) said it would shut down the popular online calendar management app Sunrise after buying it in 2015. The decision to shutter Sunrise led to several of its customers publicly complaining.

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As of now, Mozilla said nothing will change, and people will still be able to use Pocket as they currently do.