What is Kaleo?

Kaleo is a community-centered platform and app that makes giving back easy. Founded by a team with a deep passion for service, Kaleo connects volunteers and local organizations in real time to create stronger, more vibrant communities where everyone can thrive.

Two women volunteers building a house

Kaleo is a Greek word meaning ‘to call’ or ‘to invite’

Kaleo's Mission

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Making communities better

By seamlessly connecting volunteers with meaningful service opportunities, Kaleo is committed to transforming communities into vibrant centers of compassion and collaboration. Kaleo's mission is to cultivate a network where collective efforts lead to substantial and lasting improvements in local life.

Matching Volunteers with local needs

Kaleo serves as a bridge between individuals eager to serve and organizations in need of support. Drawing from questions and insights, Kaleo can connect willing volunteers with service opportunities based on skill sets, passions and schedules. It is Kaleo's hope to create a more resilient society by rebuilding essential human connections.

Kaleo Connecting Volunteers Shaking Hands
Volunteers at a Food Bank Helping Their Community

An opportunity to simplify the path to serve

Kaleo simplifies the way volunteers connect, serve and inspire. The platform makes it easier to build environments of growth and compassion, attract skilled volunteers and infuse grace, hope and joy into community life.

Meet our Team

Kaleo, a trademark of Tuple Software® Inc., was founded by Craig Wittenberg in 2017.

Craig, our CEO, holds a Computer Science degree from the University of Washington and an MBA from Wharton. With years of experience at Microsoft, his faith has always played a pivotal role in his life, both inspiring the essence of Kaleo.

Tyler Huson, our Director of Community Development, pairs his Computer Science background with a deep passion for technology and service. Committed to his church and community, he’s dedicated to helping those in need, integrating tech and heart in everything he does.

Steve Mattox is an accomplished Product Manager in the software industry, known for his expertise in driving product deliverables and managing development activities at Microsoft, as well as start-ups such as Medio Systems, Evolve1, Xealth, Swype, and now Kaleo. He enjoys volunteer work, playing music at his church, building houses in Mexico, and constructing tiny homes in Seattle.

Helen Coates is a community-focused professional with 20+ years of experience in startups, including Gemvara, Donor Impact, Evolve1, and most recently Kaleo. With a strong background in operations and project management, she supports mission-driven work and serves on the board of the Opioid Spoon Project, an artist-led advocacy group raising opioid crisis awareness.

Sven Pleyer guides Kaleo’s technology strategy, drawing on decades of experience at Microsoft and other innovative tech firms. He has a gift for simplifying complex technology, continually making the Kaleo platform and app experience simpler, more intuitive and accessible for all. Beyond work, he enjoys playing soccer, hiking with his dog, photography, and a good challenge in billiards.

Jonni Ressler works with Kaleo’s leadership team to drive marketing and sales strategy in service of growth and community impact. With an extensive background in technology sales and marketing, Jonni brings a pragmatic, people-first approach to complex challenges. She is known for asking the questions others skip. Jonni believes deeply in the power of mutually beneficial relationships as the foundation for thriving teams and connected communities. She spends her free time gardening, performing, and chasing anything comedy-adjacent.

Kaleo® is a community-centered app and platform that connects willing volunteers to local service opportunities in real time.

Kaleo makes it simple to connect with organizations in real time, so you can get involved quickly with opportunities that align with your skills and interests.

Organizations can use Kaleo to engage volunteers, manage opportunities and share needs with the community.

Looking for more answers? Explore common questions about using Kaleo here.

Kaleo stands with
communities fighting hunger.

Free 6-month access for organizations mobilizing volunteers + donations to address food insecurity.

Apply Now