Eleo Online Donor Management Software

Eleo is a product of Community Software Solutions, Inc. (CSS), whose specialized software has supported nonprofit and governmental social programs.

Software Development

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Headquarters: Princeton, New Jersey, United StatesSource: RevenueBaseRetrieved October 13, 2026
Employee range: 11 to 50Source: RevenueBaseRetrieved October 13, 2026
Published list appearances: 2 supported appearances ↗Source: RevenueBase lists

The company at a glance

What does Eleo Online Donor Management Software do?

Eleo is donor management software intended for nonprofits of all sizes, supporting fundraising and donor cultivation.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

What the business offers

Services & capabilities.

Donor management software

The software is designed to support nonprofits’ donor cultivation and fundraising efforts.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

#24OF 25

United States

Nonprofit tax software companies

Snapshot: September 4, 2026

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#24OF 25

United States

Prospect research software companies

Snapshot: September 28, 2026

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Positions describe ordering within each source list. See how lists are built ↗

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Eleo Online Donor Management Software

#24 Nonprofit tax software companies

Snapshot: September 4, 2026

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  <img src="https://revenuebase.ai/companies/profiles/eleoonline/recognition-companies-nonprofit-tax-software-companies-united-states-20260905-ace0af21bef7858ab9b0c7974564f4100f9a41519f57081722c03d82686e2bca.svg" alt="Eleo Online Donor Management Software listed #24 on Nonprofit tax software companies, September 4, 2026" width="220" height="319" style="max-width:100%;height:auto;" />
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Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 3, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 4, 2026 and September 28, 2026. How the company lists are built.

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