01 / CGCS SOFTWARE
Nearly ready for release
Rindavo PDF Editor and PDF Toolkit
PDF editing and practical tools in one place.
Explore the projectCONCRETE GHOST / CREATIVE SERVICES
Software for the work in front of you.
Focused tools are taking shape at CGCS. Meet the Rindavo apps for PDF and Markdown, with LinkSeen on the way.
Next up Rindavo PDF + Rindavo Markdown are nearly ready.
UPCOMING RELEASESCGCS / 2026
PDF EDITOR + TOOLKIT 
MARKDOWN VIEWER + EDITOR WORK TOOLS WITH A POINT OF VIEW02 / 03
TOOLS FOR REAL WORK—INDEPENDENT SOFTWARE—BUILT BY CGCS
01 / THE SOFTWARE DESKNEARLY READY + IN THE PIPELINE
Made to get things done.
Our productivity lineup is moving toward release. Explore what’s coming, and check back for download details.
Showing all 5 projects.
02 / CGCS SOFTWARE
Nearly ready for release
Rindavo Markdown Viewer and Editor
View and edit Markdown in one workspace.
Explore the project03 / CGCS SOFTWARE
Coming soon
LinkSeen
A new perspective on links.
Explore the project02 / AFTER HOURS
Room to play.
Two games are being polished for web play. Meet them while we put the finishing touches in place.
Concept artwork
Polishing for web play
Concept artwork
Polishing for web play03 / THE STUDIO
Useful can have personality.
Concrete Ghost Creative Services builds productivity software and independent games. We care about the small details that make a tool feel considered and a game worth returning to.
GOOD COMPANYBetter things,
Better things,
together.
SPJR Computer Consulting
CGCS is a partner of SPJR Computer Consulting. Discover our partner’s technology and consulting services.
Visit SPJR Solutions (opens in a new tab)