ACP Admin manages CSA members, deliveries, billing, and communications. In use since 2014, coordinating 140,000+ baskets a year.
Category
Productivity
Pricing
Usage-based (revenue share), from 1% of annual invoiced amount (capped at 2,400 CHF/EUR per year)
Verified
Not yet
Last updated
July 18, 2026
Founded
2014
Headquarters
Switzerland
Web AppOpen SourceFreemiumSelf-Hosted
Overview
ACP Admin (published under the name CSA Admin) is software built exclusively for Community Supported Agriculture organizations — the model where members subscribe in advance to receive regular baskets of produce directly from a farm or cooperative.
It has been in production use since 2014, created by developer Thibaud Guillaume-Gentil, and today coordinates the administration of more than 140,000 baskets a year across organizations in Switzerland, Germany, and the Netherlands.
Key Features
The platform handles the full membership lifecycle: registration, waiting lists, flexible delivery schedules that account for variable frequencies and member absences, and structured renewal or cancellation workflows (including bidding-based renewals).
Beyond membership, it includes an online shop for supplementary products with stock/inventory management, tools for tracking basket contents and harvest value, and features for organizing member participation in fieldwork and preparation activities.
Billing and Payments
Invoicing is automated, generating QR-bill invoices and supporting SEPA Direct Debit and EBICS-based payment reconciliation, which reduces manual bookkeeping for organizations handling hundreds of recurring member payments.
Personalized email communications and newsletters are built in for keeping members informed about deliveries, renewals, and organizational updates.
Key Features
Member & waiting-list management — Registration, subscription tracking, and waiting lists for CSA members.
Flexible delivery scheduling — Supports variable delivery frequencies and member absence handling.
Automated QR-bill invoicing — Generates QR-bill invoices with SEPA Direct Debit and EBICS payment reconciliation.
Member email communications — Personalized newsletters and communications sent directly to members.
Fieldwork participation tracking — Tracks member involvement in farm fieldwork and preparation activities.
Pros & Cons
Pros
Purpose-built for CSA/ACP operations rather than a generic CRM adapted to the use case
Hosting, support, and security updates bundled into the pricing with no setup fee
Proven at scale — used to coordinate 140,000+ baskets annually across multiple countries
Multilingual (English, French, German, Italian, Dutch) for cross-border European use
Source code publicly available on GitHub
Cons
Revenue-share pricing (1% of invoiced amount) can be harder to budget for than a flat subscription, especially for larger CSAs
Licensed as source-available (O'Saasy), not a standard open-source license
Narrow focus on CSA/direct farm distribution means it isn't a fit for other retail or subscription-box models
Pricing
Self-hosted Free N/A
Managed hosting 1% of amount invoiced per year, capped at 2,400 CHF/EUR Annual
Frequently Asked Questions
What is ACP Admin used for?
Managing the day-to-day operations of Community Supported Agriculture (CSA/ACP) organizations: member subscriptions, delivery scheduling, invoicing, and communications.
How much does ACP Admin cost?
1% of the amount invoiced through the platform per year, capped at 2,400 CHF/EUR annually, with hosting, support, and updates included and no setup fee.
Is the source code available?
Yes, it's published on GitHub under the O'Saasy license.
Which countries is it used in?
CSA organizations in Switzerland, Germany, and the Netherlands use the platform, among others.