There are many apps available for mindfulness in the workplace, but some of the most popular ones include:

1. Headspace - https://www.headspace.com/ Offers guided meditations, mindfulness exercises, and sleep tools.

This app provides a range of guided meditations, mindfulness exercises, and sleep tools, and is designed to be accessible for beginners and experienced practitioners alike. It has been widely praised for its user-friendly interface and the quality of its content.

• Calm - https://www.calm.com/ Provides guided meditations, sleep stories, and relaxation techniques.

With guided meditations, sleep stories, and relaxation techniques, Calm has been popular for its calming and soothing content. It also offers a range of features such as daily reminders and tracking tools to help you build a mindfulness habit.

• Insight Timer - https://insighttimer.com/ Offers thousands of guided meditations and mindfulness exercises from a variety of teachers.

This app offers thousands of guided meditations and mindfulness exercises from a variety of teachers, making it easy to find something that suits your specific needs. It also has a community feature that allows you to connect with other meditators around the world.

• 10% Happier - https://www.tenpercent.com/ Provides guided meditations and mindfulness exercises, as well as courses and talks on meditation.
• Stop, Breathe & Think - https://www.stopbreathethink.com/ Offers guided meditations, mindfulness exercises, and tools to track your progress.

It's worth noting that there are many other apps available, and the best one for you may depend on your personal preferences and needs. It may be worth trying out a few different apps to see which one you find most helpful.

Note that some of these apps offer both free and paid versions, with different features and options available. It may be worth exploring the websites to find out more about each app and decide which one is best suited to your needs.