sct-verify, Signed Certificate Timestamp (SCT) TLS extension verifier, a small python script to receive and verify Certificate Transparency SCT via TLS Extension using openssl. More details on the blog post.
FlowGraph, a web interface to dynamically build graphs from netflow data. More details on the project page.
RIPE Atlas Tracepath, A web-app which reads results from RIPE Atlas traceroute measurements and shows the Autonomous Systems that probes traverse to reach the target. More details here.
ipdetailscache, a Python library to gather IP address details (ASN, prefix, resource holder, reverse DNS) using the RIPEStat API, with a basic cache to avoid flood of requests and to enhance performance.