Willimantic Victorian Neighborhood Association
- Organization that strives to educate and assist the community in the preservation and promotion of the Victorian history, architecture and character of the town.
- http://www.victorianwillimantic.org/

The Green Party of Connecticut
- Northeast chapter of state political party and activist organization.
- http://www.ctgreens.org/ne/

Willimantic Church of the Nazarene
- Church of the Nazarene information and services.
- http://ctnaz.lambsway.org/willimantic/

Thread City Bread
- Willimantic area's special type of money that's issued and used as a fun and effective means of barter to promote local business, get people working and foster community.
- http://www.snet.net/features/insights/articles/1998/08060101.shtml

Covenant Soup Kitchen
- Program based at Saint Paul's Episcopal Church that serves breakfast and lunch six days a week and operates a emergency food pantry five days a week.
- http://www.covenantsoupkitchen.org/

Windham Textile & History Museum
- Housed in buildings constructed in 1877 at the Windham Mills complex in Willimantic.
- http://www.millmuseum.org/