FSM Simulator - Master Automata Theory Visually

Struggling with Finite State Machines? Turn abstract automata concepts into beautiful, interactive visualizations. Perfect for Computer Science students learning Theory of Computation!

Beautiful by Design

Visual State Diagrams
• Color-coded states (start = green, accept = gold)
• Animated transitions with neon trails
• Current state pulsing effect
• Rainbow path highlighting
• Drag & drop state positioning

Build Any Automaton

State Management
• Create unlimited states (q0, q1, q2...)
• Set start state (green arrow)
• Mark accept states (double circle)
• Custom state names
• Delete/reorder states

Transition Builder
• Add transitions between any states
• Define input symbols (a, b, 0, 1, etc.)
• Multiple transitions per state
• Visual transition editor
• Self-loops supported

Test Your FSM

String Tester
• Type any input string
• Step-by-step execution
• Real-time state highlighting
• Current & remaining input display
• Speed control (slow motion to fast)

Results Analysis
• Accept/Reject status
• Full execution path
• Step count & duration
• History of all tests
• Share results with classmates

Visual Themes
• Neon (Cyberpunk)
• Matrix (Green code style)
• Pastel (Soft learning)
• Professional (Clean)
• Cyberpunk (Vibrant)
• Sunset (Warm tones)
• Nord (Arctic cool)

Perfect For:
• Theory of Computation students
• Automata theory courses
• Compiler design learners
• CS exam preparation
• Teaching state machines

Example Automata Included:
• String ends with 'ab'
• Even number of zeros
• Divisible by 3 detector
• Palindrome checker
• And more!

Advanced Features:
✓ Deterministic & Non-deterministic FSM
✓ Epsilon (ε) transitions support
✓ Export diagram as image
✓ Save/load FSMs
✓ Validation (deterministic check)
✓ Convert NFA to DFA (Premium)
✓ Regular expression to FSM
✓ Minimization algorithms

Privacy First
• 100% offline
• No internet permission
• No data collection

No account. No internet. Just pure automata learning.

Download FSM Simulator and finally understand how state machines work - visually, interactively, beautifully!