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Nonprofits · head to head

Mightycause vs Tendenci

Mightycause logo

Mightycause

Nonprofits

Fundraising platform for nonprofits and causes

From
Free
Rated
-
Full reviewWebsite
Tendenci logo

Tendenci

Nonprofits

Open-source association management system for nonprofits

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Mightycause no paid tiers or premium upgrade options available; Tendenci self-hosting is a real operational commitment, and organisations without technical capacity should not treat the free licence as a free system
  • They diverge on capability: Mightycause covers Campaign creation, Tendenci covers Open-source licence.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Mightycause and Tendenci actually diverge.

Attributes where Mightycause and Tendenci differ
AttributeMightycauseTendenci
Pricing modelsubscriptionOpen source, with paid hosting available
PlatformsWeb, Mobile-responsiveWeb, Linux, Self-hosted, Cloud
Founded2008Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Nonprofits).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Mightycause

  • Campaign creation
  • Donation collection
  • Email campaigns
  • Donation tracking
  • Social sharing
  • Stripe
  • PayPal
  • Google Analytics

Only in Tendenci

  • Open-source licence
  • Membership management
  • Events and registration
  • Donations
  • Content-managed website
  • Email

What people use each for

The jobs each tool is most often brought in to do.

Mightycause

  • Nonprofits running online donation and peer-to-peer fundraising campaigns without a software subscription feenot Tendenci

Tendenci

  • Nonprofits whose boards require member and donor data to stay under their own controlnot Mightycause
  • Organisations with data residency obligations a hosted platform cannot satisfynot Mightycause
  • Groups with technical capacity wanting to avoid per-member subscription costs at scalenot Mightycause
  • Associations needing to customise workflows beyond what a proprietary platform allowsnot Mightycause

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Mightycause

  • No paid tiers or premium upgrade options available

Tendenci

  • Self-hosting is a real operational commitment, and organisations without technical capacity should not treat the free licence as a free system
  • The community is small compared with mainstream open-source projects, so answers are harder to find and contributors are few
  • The interface is dated against the commercial association platforms and this is the most common user complaint
  • Fewer integrations than commercial competitors, and building them is a development task rather than a configuration one
  • Feature depth in events and continuing education is behind the specialist commercial systems

Pricing, plan by plan

Mightycause

Free
  • FreeFree
    • Campaign creation
    • Donation collection
  • Professional$50/month
    • Advanced features
    • Email campaigns
    • Premium support

Tendenci

Free
  • Self-hostedFree
    • Full source code
    • No per-member licence
    • Community support
  • Managed hosting$undefined/month
    • Hosted and maintained
    • Updates applied
    • Support included

Which should you pick?

Choose Mightycause if

  • You need campaign creation.
  • You want to start without paying.
  • You work on Web, Mobile-responsive.
  • You also want donation collection.
Mightycause review

Choose Tendenci if

  • You need open-source licence.
  • You want to start without paying.
  • You work on Web, Linux, Self-hosted, Cloud.
  • You also want membership management.
Tendenci review

Questions people ask

Is Mightycause or Tendenci better?
Neither clearly leads. Mightycause starts at Free and Tendenci at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Mightycause or Tendenci?
Mightycause starts at Free and Tendenci at Free.
Does Mightycause or Tendenci run on more platforms?
Mightycause runs on Web, Mobile-responsive. Tendenci runs on Web, Linux, Self-hosted, Cloud.
Can I use Mightycause for free?
Both have a free tier, so you can try either at no cost before committing.
What is Mightycause best used for?
Mightycause is most often used for nonprofits running online donation and peer-to-peer fundraising campaigns without a software subscription fee. Of those, nonprofits running online donation and peer-to-peer fundraising campaigns without a software subscription fee is not what Tendenci is typically brought in for.
What can Mightycause do that Tendenci cannot?
Mightycause covers Campaign creation, Donation collection, Email campaigns, Donation tracking. Tendenci covers Open-source licence, Membership management, Events and registration, Donations.

Answered from the vendors’ own pages

Mightycause: How much does Mightycause cost?

Mightycause is completely free to use. The platform provides full fundraising capabilities at zero cost per month for nonprofit organizations.

Source
Tendenci: Is Tendenci really free?

The software is, under an open-source licence with no per-member fee. Running it is not: hosting, updates, backups and security are the organisation responsibility unless managed hosting is purchased.

Mightycause: Is Mightycause free forever?

Yes, Mightycause charges zero dollars per month for all nonprofit organizations using its fundraising platform.

Source
Tendenci: Who should choose it?

Organisations with a genuine requirement to control their own data, and the technical capacity to act on it. Choosing it purely to avoid subscription cost usually ends badly.

Mightycause: Are there any hidden costs or add-on fees?

No hidden costs are mentioned. Mightycause emphasizes that it provides a complete feature set for nonprofit fundraising at no cost, positioning itself as an alternative to paid fundraising tools.

Source
Tendenci: Can I move my data out?

Yes, entirely. That is the point. Data lives in a PostgreSQL database you control, and there is no vendor holding it.

Tendenci: How does it compare to Wild Apricot?

Wild Apricot is easier, better supported and better looking. Tendenci is the answer when data ownership is a requirement rather than a preference.

Tendenci: Is it actively maintained?

It is developed openly on GitHub with a small team and community. Check recent commit activity before committing, as with any small open-source project.

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