
InstaFlow AI is TEKTHRILL Technologies' free Instagram comment-to-DM automation platform. When someone comments a chosen keyword on a Reel or post, InstaFlow AI replies to the comment and sends your link straight to that person's DMs within seconds, and every person who engages can be saved as a lead. It connects through Meta's official Instagram Graph API using Facebook login, so it never asks for your Instagram password, and it includes randomised reply timing and multiple message variations to keep automated replies natural. Built for creators, small businesses and online shops, coaches and marketers, and agencies that manage Instagram engagement for clients. It runs in the browser at sm.tekthrill.com, with an Android app for managing automations from your phone. Free to use.

PDF & 3D Tools (also called PDF & 3D Enterprise Tools) is TEKTHRILL Technologies' free productivity suite for engineers, designers, students and offices. It opens industry-standard 3D CAD files and edits scanned PDF documents with on-device OCR. The 3D viewer, powered by an Open Cascade Technology (OCCT) engine in WebAssembly with WebGL rendering, loads STEP and IGES assemblies, BREP, SLDPRT/SLDASM, meshes such as STL, OBJ, GLB/GLTF, 3MF, PLY and FBX, DXF/DWG 2D drawings and Gerber PCB layers with drill files, with orbit, zoom, pan, section cuts and shaded or wireframe views. The PDF editor extracts searchable text from scans, lets you edit text, annotate, highlight, redact, sign, merge, split, reorder, rotate and delete pages. Everything runs locally; files are not sent to a server, which suits confidential engineering drawings and company documents. Free in the browser, on Windows and on Android (Google Play).