SumlinoWebInferio
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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.
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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.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Freelancers, small businesses, studios, service providers, schools and membership organisations, especially in the Netherlands.
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Audience
Freelancers, Consultants, and Project Managers
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Not Supported
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Screenshots and VideosNo images available
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Screenshots and VideosNo images available
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Pricing
EUR 0.75/quote excl. VAT
Free Version
Not Supported
Free Trial
Supported
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Pricing
$18/month
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationWebInferio
Netherlands
sumlino.com
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Company InformationWorkCentral
Founded: 2026
United States
workcentral.app
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Categories |
Categories |
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Integrations
No info available.
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Integrations
No info available.
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