Another site:
AllTop 200 most popular tests to learn English...
1) Test de niveau anglais (webmaster) 6 776 455
2) Placement test : grammar for beginners (anonyme) 5 988 459
3) A/AN (webmaster) 5 363 123
4) Auxiliary BE (webmaster) 3 223 242
5) Present continuous (webmaster) 2 998 029
6) Present simple (webmaster) 2 910 559
7) Present simple (webmaster) 2 596 272
8) Present continuous (webmaster) 2 432 012
9) Adjectives (webmaster) 2 092 943
10) A/an (anonyme) 2 014 225
11) Present perfect simple (webmaster) 1 641 007
12) Preterite (webmaster) 1 625 088
13) Vocabulary - Placement test (bridg) 1 618 712
14) Preterite (webmaster) 1 445 569
15) Short placement test (webmaster) 1 443 145
16) To be (bridg) 1 405 648
17) What time is it? (webmaster) 1 348 624
18) Present perfect (webmaster) 1 344 323
19) The alphabet in English (webmaster) 1 320 462
20) Adjectives (anonyme) 1 215 341
21) What time is it? (webmaster) 1 207 187
22) Numbers (webmaster) 1 188 263
23) 'A' ou 'An' (anonyme) 1 174 674
24) Two presents: present continuous, present simple (webmaster) 1 148 630
25) To be (bridg) 1 145 040
26) Comparatives / Superlatives (webmaster) 1 102 012
27) Numbers (webmaster) 1 070 283
28) CAN / MUST (webmaster) 1 058 104
29) THE/ A / AN / nothing (webmaster) 1 032 558
30) Comparatives (webmaster) 1 006 784
31) Family life (bridg) 1 000 316
32) Numbers > 100 (webmaster) 986 039
33) Future (going to/will/present continuous) (anonyme) 963 024
34) Plural (webmaster) 955 335
35) Superlatives (webmaster) 874 725
36) Adjectives (anonyme) 874 390
37) Simple present (bridg) 853 362
38) Spelled words N°1 (bridg) 849 755
39) Placement test beginners: Check your spelling (anonyme) 829 872
40) Introducing oneself (webmaster) 826 938
41) Adverbs of frequency (anonyme) 816 668
42) Family (bridg) 784 354
43) General test-End of high school / Beginning of university (webmaster) 782 419
44) Present simple (anonyme) 779 432
45) Frequency adverbs (webmaster) 777 466
46) Present BE + Ving (bridg) 764 603
47) Genitive (webmaster) 723 276
48) Family tree (anonyme) 719 081
49) Passive form (anonyme) 718 695
50) Preterite: simple or continuous? (webmaster) 716 039
51) Placement test (beginners) (lili73) 700 613
52) Past simple or present perfect (anonyme) 693 053
53) Future (webmaster) 675 621
54) 2 Preterites (webmaster) 661 477
55) Present perfect simple (bridg) 659 595
56) Preterite (webmaster) 619 746
57) List of 200 irregular verbs and audio (bridg) 615 644
58) Modals (webmaster) 612 439
59) Spelled words N°2 (bridg) 608 866
60) Height (webmaster) 606 121
61) Modals (webmaster) 604 585
62) Articles a / an / the (anonyme) 596 742
63) Plural forms (bridg) 577 080
64) Nationalities (webmaster) 573 987
65) Past continuous / Past simple (anonyme) 565 237
66) Irregular plurals (bridg) 553 281
67) Two presents: simple and continuous (webmaster) 549 281
68) Preterite (bridg) 548 628
69) Superlatives (frapedur) 537 400
70) Vocabulary: greeting people (here4u) 536 443
71) Give your opinion (bridg) 531 655
72) Adverbs of Frequency (bridg) 516 731
73) Present simple or continuous (anonyme) 509 885
74) Present perfect / preterite ? (anonyme) 508 391
75) Possessive case (anonyme) 480 312
76) Countries & nationalities (bridg) 473 121
77) 'The' or nothing? (webmaster) 471 060
78) Introducing oneself (easy) (webmaster) 470 549
79) Past tenses (bridg) 470 389
80) Passive voice (webmaster) 462 629
81) Present Simple vs. Past Simple (anonyme) 456 212
82) Questions : how to ask them (anonyme) 447 992
83) General Test II / End of high school / Beginning of universi (webmaster) 445 957
84) IN, ON, AT or TO? (webmaster) 444 774
85) Relative pronouns (webmaster) 443 960
86) Comparative of superiority (anonyme) 437 996
87) How to pronounce the final -ED? (past simple) (webmaster) 437 115
88) Relative clauses (webmaster) 423 010
89) Sounds: [h] (webmaster) 419 348
90) Comparative (anonyme) 413 038
91) A/an/Ø (bridg) 398 423
92) Future simple (anonyme) 395 927
93) Past simple (anonyme) 395 844
94) This / That / These / Those (webmaster) 392 322
95) Conditional (webmaster) 391 355
96) Passive voice (anonyme) 390 083
97) Comparing (webmaster) 387 836
98) Can / could/ may/ might (woodyrun) 379 101
99) Present perfect or past tense (anonyme) 376 693
100) Much, many, little and few (felin) 372 202
101) Personal pronouns (anonyme) 371 226
102) Preterite continuous (BE + -ING) (webmaster) 368 565
103) Some, any, no, enough, too/too much/too many (webmaster) 367 960
104) Genitive case (bridg) 367 709
105) Confusing words - Placement test (bridg) 364 454
106) Irregular verbs (webmaster) 363 326
107) Numbers from 1 to 10 (anonyme) 361 377
108) Past perfect simple, past perfect continuous (anonyme) 360 782
109) Present continuous or present simple (webmaster) 359 405
110) Present perfect or preterite? (anonyme) 356 237
111) Simple Past : regular verbs (anonyme) 352 386
112) Comparative Adjectives (bridg) 352 034
113) Who, Whom, Which, or Whose? (anonyme) 348 530
114) Past simple (video) (anonyme) 348 039
115) Past simple or past continuous (anonyme) 341 570
116) While / When (anonyme) 338 088
117) What time is it? (webmaster) 337 530
118) Modals (tinou) 336 335
119) Modal: may/might (anonyme) 334 004
120) Cardinal and ordinal numbers (anonyme) 328 546
121) The superlative (anonyme) 324 593
122) Possessive adjectives and pronouns (woodyrun) 323 956
123) How to talk about the weather (lili73) 320 862
124) Since and for (anonyme) 318 460
125) Flags (webmaster) 317 385
126) Irregular verbs (bridg) 315 796
127) Prepositions - in, on, at (anonyme) 313 986
128) Pronouns (woodyrun) 313 163
129) Tenses (anonyme) 311 636
130) Placement test 3 (webmaster) 310 264
131) Order of adjectives (webmaster) 306 421
132) Could/Couldn't (laure95) 305 670
133) Comparative (anonyme) 304 308
134) Adjectives and prepositions (anonyme) 303 930
135) Agreement Tags (webmaster) 303 889
136) Asking questions (webmaster) 302 935
137) Present perfect OR simple past? (bridg) 298 194
138) Questions in the past tense (anonyme) 297 316
139) Superlative Adjectives (bridg) 295 600
140) Uncountable nouns (webmaster) 295 449
141) Object pronouns (bridg) 294 520
142) Placement test 1 (anonyme) 292 561
143) Present simple (anonyme) 290 748
144) Passive form (anonyme) 290 052
145) Prefer/rather (bridg) 289 140
146) Can/Must/Should (laure95) 288 842
147) Past perfect (lili73) 287 272
148) Must or Have to? (woodyrun) 286 959
149) The/an/nothing (bridg) 284 989
150) To be (anonyme) 283 379
151) Can and can't (laure95) 280 505
152) Vocabulary: asking and answering (here4u) 280 429
153) Modal verbs (bridg) 277 127
154) Some / Any / no... (bridg) 270 239
155) Days of the week (bridg) 269 059
156) So / neither (anonyme) 264 237
157) Past simple (video) (anonyme) 263 548
158) Used to (bridg) 260 292
159) Present continuous (chnawa) 259 398
160) Should / must (anonyme) 259 371
161) Past tense (anonyme) 259 150
162) Vocabulary: on the phone (here4u) 258 711
163) Find out a quantity (webmaster) 258 479
164) Superlative + and adjective (anonyme) 257 029
165) Articles : a / an / the / Ø (anonyme) 256 032
166) Comparative and superlative (anonyme) 254 571
167) Numbers 1/100 (anonyme) 253 465
168) Modal can (video) (anonyme) 252 734
169) Relatives pronouns (who, which, that...) (anonyme) 247 814
170) Comparatives (anonyme) 246 602
171) Vocabulary: at the restaurant (here4u) 245 638
172) A few, a little, few, little (anonyme) 245 028
173) Would rather / would prefer to (anonyme) 244 159
174) Present continuous and the Going to form (anonyme) 242 375
175) Have something done (anonyme) 239 680
176) Should/ have to/ must (anonyme) 239 660
177) The past (webmaster) 237 717
178) Future continuous and future perfect. (felin) 237 448
179) Used to/would (woodyrun) 237 327
180) How to ask a question in English (bridg) 235 134
181) I wish, if only (felin) 233 951
182) Pluperfect (webmaster) 233 715
183) Countable or Uncountable? (webmaster) 233 014
184) Some / any (younes91) 232 270
185) Should / shouldn't (anonyme) 231 227
186) Present simple or continuous (bridg) 230 768
187) Adjectives - ing and ed (felin) 228 698
188) Hypothesis (webmaster) 227 954
189) Auxiliary BE (anonyme) 226 299
190) Articles a/an/the/0 (bridg) 226 129
191) Article The or nothing (anonyme) 225 796
192) Present perfect with Ever - never - (anonyme) 225 363
193) Present continuous OR Present simple? (bridg) 225 256
194) Must or mustn't (laure95) 225 025
195) Simple Preterite OR Preterite (BE+ing) (webmaster) 222 680
196) To / in order to / so as to / so that (irish21) 219 755
197) Present perfect (bridg) 219 349
198) Comparison (komiks) 217 605
199) What time is it ? (anonyme) 217 561
200) Indirect speech (bridg) 216 207
