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Turn spreadsheets into a shared deadline system. Track expirations, audits, contracts and certifications from Excel, LibreOffice or FileMaker with reminders, calendars, history and team visibility.
Website, pricing, platforms and company facts side by side.
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| Website | opalstack.com | cellalert.app |
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| Platforms | — | |
| Company | — | Startup from Germany · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Opalstack yet.
CellAlert transforms the spreadsheets your business already uses into a centralized deadline and compliance platform. Instead of manually checking Excel files, LibreOffice sheets or FileMaker databases, CellAlert automatically imports important dates, deadlines and renewal information into a...
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As answered by people managing Opalstack and CellAlert.app.
CellAlert.app's answer:
Most deadline management tools require you to move data into a new system. CellAlert works with the spreadsheets and databases businesses already use. It automatically turns dates from Excel, LibreOffice and FileMaker into a centralized deadline platform with reminders, team visibility, history tracking and compliance documentation.
CellAlert.app's answer:
CellAlert is designed for organizations that already manage information in spreadsheets. Instead of replacing existing processes, it adds deadline tracking, email reminders, audit trails, calendar integration and team collaboration on top of existing data sources. This makes implementation faster, simpler and significantly less expensive than traditional compliance or contract management systems.
CellAlert.app's answer:
CellAlert is built for small and medium-sized businesses, quality management teams, compliance officers, operations departments, consultants and organizations that track contracts, certifications, audits, inspections, training records or other critical deadlines in spreadsheets or databases.
CellAlert.app's answer:
CellAlert was created after seeing how many organizations still manage important deadlines in Excel files. Critical dates such as contract renewals, certifications, audits and inspections were often hidden across multiple spreadsheets and depended on individuals remembering to check them. CellAlert was built to turn existing business data into a shared, automated reminder system without requiring companies to replace the tools they already use.
CellAlert.app's answer:
CellAlert.app's answer:
CellAlert is currently focused on onboarding early adopters and pilot customers. Public customer references are not available at this time.
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