Software development is growing rapidly as a career path and more individuals are preparing for technical interviews. While multiple platforms exist to support learners, each platform solves only specific aspects such as coding practice, articles, interview experiences, or structured roadmaps. This fragmentation forces learners to visit multiple platforms simultaneously, breaking focus and adding unnecessary overhead to their preparation. This study compares six interview preparation platforms based on learning resources, interview experiences, communities, and structured roadmaps. A preliminary user survey (N = 14) was conducted to validate fragmentation as a primary issue. Platform fragmentation was confirmed as the primary gap in the current ecosystem, with 78.6% of surveyed users relying on three or more platforms simultaneously. To address this, NullSphere is proposed as a unified platform integrating learning resources, structured roadmaps, a topic-wise question bank, an interview experience repository, and community interaction in a single system.
Batra et al. (Sat,) studied this question.