Sumlino

Sumlino

WebInferio
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About

Sumlino is web-based invoicing and customer management software for freelancers, small businesses, studios, schools and clubs. Users can create branded invoices, quotes and credit notes, manage customer groups, track hours and business trips, and turn recorded work into draft invoices. Quotes can be accepted online using an email code. Other features include receipt uploads, recurring invoices, stock tracking, bank statement imports, bookkeeper access and data exports. Mollie supports payment links and direct debit, with approval required for each collection period. The website is available in Dutch and English. New users receive five free documents, then pay per document or choose an Unlimited subscription. Optional AI extraction helps process purchase invoices, with user review before import. Dutch calculators and practical guides are available without an account. Direct tax filing and automatic bank feeds are not included.

About

WorkCentral connects the full freelance workflow in one platform — from quote to payment. Most freelancers juggle separate apps for quotes, projects, time tracking, and invoicing, then spend hours moving data between them. WorkCentral eliminates that. Write a quote with AI-drafted line items. Client accepts, project with tasks is auto-created. Track time, generate an invoice with one click. Clients pay online via Stripe. Built by a CTO who freelanced for 15+ years and got tired of losing 5-6 hours a week to admin across five disconnected tools. Features include AI quoting, automatic quote-to-project conversion, time tracking, smart invoicing with automated reminders, online payments, expense tracking, reports, and team management. Free plan available. Early users get founder pricing — first year free, then 50% off for life.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Freelancers, small businesses, studios, service providers, schools and membership organisations, especially in the Netherlands.

Audience

Freelancers, Consultants, and Project Managers

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

No images available

Pricing

EUR 0.75/quote excl. VAT
Free Version
Free Trial

Pricing

$18/month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

WebInferio
Netherlands
sumlino.com

Company Information

WorkCentral
Founded: 2026
United States
workcentral.app

Alternatives

No Alternatives

Alternatives

Handl

Handl

Dazlab

Categories

Categories

Integrations

No info available.

Integrations

No info available.
Claim Sumlino and update features and information
Claim Sumlino and update features and information
Claim WorkCentral and update features and information
Claim WorkCentral and update features and information