Firefox release notes for developers

Below you'll find links to the developer release notes for every Firefox release. These lovingly-crafted notes provide details on what features and APIs were added and improved and what bugs were eliminated in each version of Firefox. All written to give developers like you the information they need most. You're welcome.

1. Firefox 155 (Nightly)
2. Firefox 154 (Beta)
3. Firefox 153 (Stable)
4. Firefox 152
5. Firefox 151
6. Firefox 150
7. Firefox 149
8. Firefox 148
9. Firefox 147
10. Firefox 146
11. Firefox 145
12. Firefox 144
13. Firefox 143
14. Firefox 142
15. Firefox 141
16. Firefox 140
17. Firefox 139
18. Firefox 138
19. Firefox 137
20. Firefox 136
21. Firefox 135
22. Firefox 134
23. Firefox 133
24. Firefox 132
25. Firefox 131
26. Firefox 130
27. Firefox 129
28. Firefox 128
29. Firefox 127
30. Firefox 126
31. Firefox 125
32. Firefox 124
33. Firefox 123
34. Firefox 122
35. Firefox 121
36. Firefox 120
37. Firefox 119
38. Firefox 118
39. Firefox 117
40. Firefox 116
41. Firefox 115
42. Firefox 114
43. Firefox 113
44. Firefox 112
45. Firefox 111
46. Firefox 110
47. Firefox 109
48. Firefox 108
49. Firefox 107
50. Firefox 106
51. Firefox 105
52. Firefox 104
53. Firefox 103
54. Firefox 102
55. Firefox 101
56. Firefox 100
57. Firefox 99
58. Firefox 98
59. Firefox 97
60. Firefox 96
61. Firefox 95
62. Firefox 94
63. Firefox 93
64. Firefox 92
65. Firefox 91
66. Firefox 90
67. Firefox 89
68. Firefox 88
69. Firefox 87
70. Firefox 86
71. Firefox 85
72. Firefox 84
73. Firefox 83
74. Firefox 82
75. Firefox 81
76. Firefox 80
77. Firefox 79
78. Firefox 78
79. Firefox 77
80. Firefox 76
81. Firefox 75
82. Firefox 74
83. Firefox 73
84. Firefox 72
85. Firefox 71
86. Firefox 70
87. Firefox 69
88. Firefox 68
89. Firefox 67
90. Firefox 66
91. Firefox 65
92. Firefox 64
93. Firefox 63
94. Firefox 62
95. Firefox 61
96. Firefox 60
97. Firefox 59
98. Firefox 58
99. Firefox 57
100. Firefox 56
101. Firefox 55
102. Firefox 54
103. Firefox 53
104. Firefox 52
105. Firefox 51
106. Firefox 50
107. Firefox 49
108. Firefox 48
109. Firefox 47
110. Firefox 46
111. Firefox 45
112. Firefox 44
113. Firefox 43
114. Firefox 42
115. Firefox 41
116. Firefox 40
117. Firefox 39
118. Firefox 38
119. Firefox 37
120. Firefox 36
121. Firefox 35
122. Firefox 34
123. Firefox 33
124. Firefox 32
125. Firefox 31
126. Firefox 30
127. Firefox 29
128. Firefox 28
129. Firefox 27
130. Firefox 26
131. Firefox 25
132. Firefox 24
133. Firefox 23
134. Firefox 22
135. Firefox 21
136. Firefox 20
137. Firefox 19
138. Firefox 18
139. Firefox 17
140. Firefox 16
141. Firefox 15
142. Firefox 14
143. Firefox 13
144. Firefox 12
145. Firefox 11
146. Firefox 10
147. Firefox 9
148. Firefox 8
149. Firefox 7
150. Firefox 6
151. Firefox 5
152. Firefox 4
153. Firefox 3.6
154. Firefox 3.5
155. Firefox 3
156. Firefox 2
157. Firefox 1.5

Whew! That's a lot of Firefoxen!