- Balancing PL And Project Quality
A guide for PMs and delivery managers on balancing profit and loss against software quality, with case studies, team-mix ratios, metrics, and a planning checklist.
- GonnaCrash
200Lab's free browser game at systemdesign.200lab.io. You place components, the server simulates the traffic, and a level passes only inside its success, latency, and budget limits, with up to three stars for a cheaper design.
- Sys0
sys0.in is Rakesh K's system design course, still being written: a public syllabus of 19 modules, two lessons and two labs marked free, and a yearly founding membership. Checked 2 November 2026 from this network: the founding year was shown as ₫1,408,525, opening a lesson still asked for a Google sign-in, and payments go through Dodo Payments.
- Syscraft
Syscraft is Nguyen Thanh Minh's hosted system design lab at syscraft.app: draw an architecture, run simulated traffic, and pass graded challenges. Checked 2 November 2026 without an account: the marketing page lists 7 topics and Pro at $9 a month through Lemon Squeezy, while the learn index lists 42 lessons and the challenge index lists 19.