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Nonprofits · head to head

Fluxx vs Little Green Light

Fluxx logo

Fluxx

Nonprofits

Configurable grants management for foundations that run complex, multi-stage funding programmes

From
On request
Rated
-
Full reviewWebsite
Little Green Light logo

Little Green Light

Nonprofits

Affordable donor management for small nonprofits

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Little Green Light has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fluxx configuration flexibility means the system does very little until someone configures it, and foundations without a dedicated systems administrator end up paying the vendor or a partner for every change.; Little Green Light pricing is driven purely by constituent record count, so inactive and lapsed records still raise the bill
  • They diverge on capability: Fluxx covers Configurable data model, Little Green Light covers Donor database.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Fluxx and Little Green Light actually diverge.

Attributes where Fluxx and Little Green Light differ
AttributeFluxxLittle Green Light
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes
PlatformsWebWeb, Mobile-responsive
FoundedUnknown2008

Identical on both: 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 Fluxx

  • Configurable data model
  • Card-based interface
  • Multi-programme workflows
  • Board and committee review
  • Payment scheduling
  • Applicant portal

Only in Little Green Light

  • Donor database
  • Prospect tracking
  • Relationship management
  • Task management
  • PayPal
  • Stripe
  • Google Drive
  • Web support

What people use each for

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

Fluxx

  • A foundation running six distinct funding programmes that each need their own application form, review panel and payment schedulenot Little Green Light
  • A regranting intermediary administering funds for multiple donors who each require separate reportingnot Little Green Light
  • A public agency distributing grant funds with statutory eligibility rules that must be enforced before an application can be submittednot Little Green Light
  • A funder moving off spreadsheets and email after grant volume made manual board packet preparation unworkablenot Little Green Light

Little Green Light

  • Donor management and gift tracking for small nonprofitsnot Fluxx
  • Segmenting constituents for appeals and mailingsnot Fluxx
  • Online donation forms with pay-as-you-go processingnot Fluxx

Where each one falls short

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

Fluxx

  • Configuration flexibility means the system does very little until someone configures it, and foundations without a dedicated systems administrator end up paying the vendor or a partner for every change.
  • Implementation commonly runs four to eight months and is priced separately from the subscription, so first-year cost is far above the annual licence figure.
  • No pricing is published and quotes scale with assets under management, which means two foundations making the same number of grants can be quoted very differently.
  • The card-based interface is unfamiliar to new users and reviewer adoption suffers without training, which matters because trustees use it a few times a year and forget between meetings.
  • Reporting is capable but the report builder is technical, and many foundations end up exporting to a spreadsheet or a BI tool for board-ready output.

Little Green Light

  • Pricing is driven purely by constituent record count, so inactive and lapsed records still raise the bill
  • The base plan is $45 per month for up to 2,500 constituents, rising to $135 per month at 50,000
  • Above 50,000 records each additional 10,000 tier adds $15 per month
  • An account is hard-capped at 200,000 constituent records
  • Online donation processing costs from 2.2% plus $0.30 per transaction to the payment processor
  • The 10% saving requires annual rather than monthly billing

Pricing, plan by plan

Fluxx

On request
  • Fluxx Grantmaker$undefined/year
    • Configurable grantmaking workflows
    • Applicant portal and reviewer access
    • Priced by assets under management and grant volume
  • Fluxx Grantseeker$undefined/year
    • Free portal for applicants submitting to Fluxx funders
    • Tracks submissions and requirements across funders

Little Green Light

Free
  • Up to 2,500 constituents$45/month
  • Up to 5,000 constituents$60/month
  • Up to 10,000 constituents$75/month
  • Up to 20,000 constituents$90/month

Which should you pick?

Choose Fluxx if

  • You need configurable data model.
  • You also want card-based interface.
Fluxx review

Choose Little Green Light if

  • You need donor database.
  • You want to start without paying.
  • You work on Web, Mobile-responsive.
  • You also want prospect tracking.
Little Green Light review

Questions people ask

Is Fluxx or Little Green Light better?
Neither clearly leads. Fluxx starts at On request and Little Green Light at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fluxx or Little Green Light?
Little Green Light has a free tier; the other does not. Paid plans start at On request for Fluxx and Free for Little Green Light.
Does Fluxx or Little Green Light run on more platforms?
Fluxx runs on Web. Little Green Light runs on Web, Mobile-responsive.
Can I use Little Green Light for free?
Yes. Little Green Light has a free tier, so you can try it without paying. Fluxx starts at On request.
What is Fluxx best used for?
Fluxx is most often used for a foundation running six distinct funding programmes that each need their own application form, review panel and payment schedule, a regranting intermediary administering funds for multiple donors who each require separate reporting, a public agency distributing grant funds with statutory eligibility rules that must be enforced before an application can be submitted, a funder moving off spreadsheets and email after grant volume made manual board packet preparation unworkable. Of those, a foundation running six distinct funding programmes that each need their own application form, review panel and payment schedule and a regranting intermediary administering funds for multiple donors who each require separate reporting are not what Little Green Light is typically brought in for.
What can Fluxx do that Little Green Light cannot?
Fluxx covers Configurable data model, Card-based interface, Multi-programme workflows, Board and committee review. Little Green Light covers Donor database, Prospect tracking, Relationship management, Task management.

Answered from the vendors’ own pages

Fluxx: Is Fluxx Grantseeker really free?

Yes, for applicants. It is the submission portal, and funders pay for Grantmaker.

Little Green Light: How much does Little Green Light cost?

Little Green Light uses tiered pricing starting at $45/month for up to 2,500 constituents, scaling up to $135/month for up to 50,000 constituents. All tiers include unlimited users and all features. Annual prepayment offers a 10% discount.

Source
Fluxx: How is Fluxx priced?

By quote, scaling with assets under management and grant volume. Implementation is a separate professional services fee.

Little Green Light: Is there a free trial for Little Green Light?

Yes, Little Green Light offers a 30-day free trial with no credit card required, giving full access to all platform features during the trial period.

Source
Fluxx: Can we configure Fluxx ourselves?

Yes, that is the point of it. But it requires a trained internal administrator; foundations that do not appoint one become dependent on paid services.

Little Green Light: What additional fees does Little Green Light charge?

Online donation processing charges 2.2% plus $0.30 per transaction paid to the payment processor. There are no setup fees, cancellation fees, or contracts.

Source
Fluxx: How long does implementation take?

Typically four to eight months for a multi-programme funder, driven mostly by how long the foundation takes to agree its own process.

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